2003 S6 - Oxygen Sensor Issues (2003 S6)

[Uwe]

Rock Auto

Amazon

-Uwe-

 

[atbro199]

-Uwe-

I've bought parts from Amazon many times with success.

 

[PetrolDave]

I've bought parts from Amazon many times with success.

There's always the exception that proves the rule!

 

[atbro199]

Is it possible that a malfunctioning ECU could "kill" or ruin an oxygen sensor?

 

[Uwe]

Is it possible that a malfunctioning ECU could "kill" or ruin an oxygen sensor?

Can't rule out the possibility. For example, if the ECU kept the heater circuit on continuously, I'd imagine that would be bad for the sensor. Normally it's supplied with a readily discernible duty cycle.

However, far more common is the opposite scenario, where a short in the oxygen sensor wiring takes out the ECU. Specifically of the +12V feeding the heater shorts to the signal going back to the ECU, which is connected to an analog-to-digital converter chip that has a maximum input voltage of 5V, that chip ends up fried.

-Uwe-

 

[atbro199]

Can't rule out the possibility. For example, if the ECU kept the heater circuit on continuously, I'd imagine that would be bad for the sensor. Normally it's supplied with a readily discernible duty cycle.

However, far more common is the opposite scenario, where a short in the oxygen sensor wiring takes out the ECU. Specifically of the +12V feeding the heater shorts to the signal going back to the ECU, which is connected to an analog-to-digital converter chip that has a maximum input voltage of 5V, that chip ends up fried.

-Uwe-

That's good to know - thanks. I ask because my new sensor appears to be behaving like the old sensor in terms of the voltage maintaining a more consistent reading around the 0.4ish value. Nothing changed since the last trip besides myself unplugging and re-plugging in the sensor to see if anything changes. Maybe the connector is SUPER sensitive... The MIL is still off but P1140 is present as an engine fault, nothing else.

Car is going to the shop on Friday and I plan on giving them all of this info so they can professionally diagnose. I'm going to have to throw in the towel as this seems to be a bit beyond my knowledge. Thank you for your help thus far.

Wednesday,04,September,2024,16:48:57:42314
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 10 x64
VCDS Version: 24.7.0.0 (x64)
Data version: 20240715 DS356.3
www.Ross-Tech.com

--------------------------------------------------------------------------------
--------------------------------------------------------------------------------


                Address 01: Engine  (4D0 907 560 CN)

16:48:54 Group 036: Lambda Control (Sensor Readiness - After Catalyst)
  0.520 V  Sensor Voltage Bank 1 Sensor 2
  B1-S2 OK  Result Lambda Availability
  0.450 V  Sensor Voltage Bank 2 Sensor 2
  Test OFF  Result Lambda Availability

16:48:54 Group 030: Lambda Control (Sensor Status)
       111  Bank 1 Sensor 1
       111  Bank 1 Sensor 2
       111  Bank 2 Sensor 1
       100  Bank 2 Sensor 2

16:48:54 Group 042: Lambda Control (Lambda Sensor Heating Bank 2)
  0.30 kOhm  Resistance Bank 2 Sensor 1
  Htg. S1 OFF  Heater Condition Bank 2 Sensor 1
  25.50 kOhm  Resistance Bank 2 Sensor 2
  Htg. S2 OFF  Heater Condition Bank 2 Sensor 2

 

[atbro199]

Can't rule out the possibility. For example, if the ECU kept the heater circuit on continuously, I'd imagine that would be bad for the sensor. Normally it's supplied with a readily discernible duty cycle.

However, far more common is the opposite scenario, where a short in the oxygen sensor wiring takes out the ECU. Specifically of the +12V feeding the heater shorts to the signal going back to the ECU, which is connected to an analog-to-digital converter chip that has a maximum input voltage of 5V, that chip ends up fried.

-Uwe-

What would the symptoms be if that chip gets fried? Heater circuit not working?

 

[Uwe]

What would the symptoms be if that chip gets fried? Heater circuit not working?

Most often, an complete lack of response to the accelerator pedal, since it apparently is read using the same chip in the ECU.

-Uwe-

 

[atbro199]

Prior to taking the car to the shop last week, I used a dremel to create a notch in the oxygen sensor connector (black) to fit better into the ECU harness B2S2 sensor (brown), since I couldn't get the pins out of the brown connector. It took maybe a minute or two and worked out well.. the plug made the connection much easier. Once I did this, I made a DTC reset (MIL wasn't on but P1140 was present as an engine fault and was ODBII pending).
The shop wanted a fault to diagnose my issues but they couldn't produce a fault. They drove it 70+ miles without issue. The car still wasn't setting all readiness tests, though. The shop gave me the car back and told me to bring it back once it created a fault. OK sounds good.

Since then I probably put another 50 miles on the car, so over 120 miles since the DTC reset, and the car hasn't produced a fault! YAY!

However, the downside is that there are three readiness tests that still haven't passed without any faults. Any idea what scenario could cause this? Or do I need to keep driving it? Which I'm happy to do...

I made an auto scan and will be submitting this for a Label file to be created:

Thursday,12,September,2024,19:36:48:42314
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 10 x64
VCDS Version: 24.7.0.0 (x64)
Data version: 20240715 DS356.3
www.Ross-Tech.com

VIN: WAUXU64B43N116243   License Plate:

--------------------------------------------------------------------------------
--------------------------------------------------------------------------------


Chassis Type: 4B (4B - Audi A6/S6/RS6/allroad C5 (1998 > 2005))
Scan: 01 02 03 06 08 15 16 17 18 22 34 35 36 37 45 55 56 57 65 67
          75 76 77
 
VIN: WAUXU64B43N116243   
-------------------------------------------------------------------------------
Address 01: Engine        Labels: 077-907-559-ANK.clb
   Part No: 4D0 907 560 CN
   Component: 4.2L V8/5V      G   0001 
   Coding: 06752
   Shop #: WSC 24253 
   VCID: 74E783CC441E6536D7-515E
   WAUXU64B43N116243     AUZ7Z0C2391716

No fault code found.
Readiness: 0110 0001

-------------------------------------------------------------------------------
Address 02: Auto Trans        Labels: 01L-927-156.lbl
   Part No: 4B0 927 156 FH
   Component: AG5 01L 4.2l5V  USA 1314 
   Coding: 00002
   Shop #: WSC 02334 
   VCID: 72EB85D43E0A6B06C5-5140

No fault code found.

-------------------------------------------------------------------------------
Address 03: ABS Brakes        Labels: 4B0-614-517.lbl
   Part No: 4B0 614 517 E
   Component: ABS/ESP allrad      3428 
   Coding: 06397
   Shop #: WSC 31414 
   VCID: 2345B090B170B28EFE-5124

1 Fault Found:
01119 - Gear Recognition Signal
            35-10 - - - Intermittent

-------------------------------------------------------------------------------
Address 08: Auto HVAC        Labels: 4B0-820-043-MY2.lbl
   Part No: 4B0 820 043 AR
   Component: A6-Klimavollautomat 0208 
   Coding: 00010
   Shop #: WSC 00000 
   VCID: 6ADB9DB416DAA3C67D-2586

No fault code found.

-------------------------------------------------------------------------------
Address 15: Airbags        Labels: 4B0-959-655-AI84.lbl
   Part No: 4B0 959 655 Q
   Component: Airbag 8.4EP        3001 
   Coding: 0000607
   Shop #: WSC 02334 785 00200
   VCID: 3E7361E46AD2FF66F1-5140

No fault code found.

-------------------------------------------------------------------------------
Address 17: Instruments        Labels: 4B0-920-xxx-17.lbl
   Part No: 4B0 920 981 Q
   Component: KOMBI+WEGFAHRS. VDO D12 
   Coding: 03283
   Shop #: WSC 62859 
   VCID: 346743CC049E253617-515E
   WAUXU64B43N116243     AUZ7Z0C2391716

1 Fault Found:
01304 - Radio
            49-00 - No Communications

-------------------------------------------------------------------------------
Address 35: Centr. Locks        Labels:. 4B0-962-258.clb
   Part No: 4B0 962 258 M
   Component: Central Lock/Alarm  D38 
   Coding: 15977
   Shop #: WSC 02334 
   VCID: 336540D00190220E0E-4F06

3 Faults Found:
01559 - Drivers Door
            59-10 - Can't Unlock - Intermittent
01561 - Rear left door
            59-10 - Can't Unlock - Intermittent
01562 - Rear right door
            59-10 - Can't Unlock - Intermittent

-------------------------------------------------------------------------------
Address 36: Seat Mem. Drvr        Labels: None
   Part No: 4B0 959 760 B
   Component: Sitzmemory R1 F     0204 
   Coding: 00001
   Shop #: WSC 00000 
   VCID: 2C575BACDCAE7DF64F-4B00

No fault code found.

-------------------------------------------------------------------------------
Address 37: Navigation        Labels: 4B0-919-887-BNS4.lbl
   Part No: 4B0 919 887 E
   Component: BNS 4.2 H05    BNO 0050 
   VCID: 35617EC80FE43C3E20-4AE8

No Faults Found
  or DTCs not supported by controller
  or a communication error occurred

-------------------------------------------------------------------------------
Address 55: Headlight Range        Labels: 4Z7-907-357.lbl
   Part No: 4Z7 907 357
   Component: dynamische LWR       D09 
   Coding: 00050
   Shop #: WSC 02334 
   VCID: 0407D30C14BE55B6E7-4B4C

No fault code found.

End-------------------------(Elapsed Time: 06:05)--------------------------

 

[Uwe]

However, the downside is that there are three readiness tests that still haven't passed without any faults. Any idea what scenario could cause this? Or do I need to keep driving it? Which I'm happy to do...

Show us the Readiness screens please, both in native VAG mode, and in OBD-II mode.

-Uwe-

 

[atbro199]

I took some time yesterday to run the car around with VCDS to try to get some better data into what's going on. After 200+ miles, a fault code was finally thrown, and it was a new one.

As requested, here is the Readiness output from the native mode:

Readiness Status: 0110 0001
Exhaust Gas Recirculation: Passed
Oxygen Sensor Heating: Failed or Incomplete
Oxygen Sensor(s): Failed or Incomplete
Air Conditioning: Passed
Secondary Air Injection: Passed
Evaporative Emissions: Passed
Catalyst Heating: Passed
Catalytic Converter(s): Failed or Incomplete

I couldn't figure out how to export the ODBII screen to the log so I took a screenshot and transcribed it below:

Number of DTCs stored 0 - MIL status: MIL off
Misfire monitoring: Passed
Fuel System: Passed
Comprehensive Components: Passed
Catalyst monitoring: Failed or Incomplete
Heated Catalyst monitoring: Not installed
Evaporative System monitoring: Passed
Secondary air system monitoring: Passed
A/C system refrigerant monitoring: Not installed
Oxygen sensor monitoring: Failed or Incomplete
Oxygen sensor heater monitoring: Failed or Incomplete
Exhaust gas recirculation: Not installed

Lastly, here are several readouts from related groups:

                Address 01: Engine  (4D0 907 560 CN)

10:25:11 Group 036: Lambda Control (Sensor Readiness - After Catalyst)
  0.160 V  Sensor Voltage Bank 1 Sensor 2
  B1-S2 OK  Result Lambda Availability
  0.440 V  Sensor Voltage Bank 2 Sensor 2
  Test OFF  Result Lambda Availability

10:25:11 Group 047: Lambda Control (Catalytic Conversion Test Bank 2)
  640 /min  Engine Speed (G28)
  460.0°C  Catalytic Converter Bank 2 Temp.
  0.00  Catalytic Conversion Bank 2
  Test OFF  Cat. Conversion Test Bank 2

10:25:11 Group 044: Lambda Control (Aging Check: Bank 2 Sensor 2)
  680 /min  Engine Speed (G28)
  460.0°C  Catalytic Converter Bank 2 Temp.
  0.440 V  Lambda Voltage Bank 2 Sensor 1
  Test OFF  Lambda Sensor Aging Test B2S2

--------------------------------------------------------------------------------
--------------------------------------------------------------------------------


                Address 01: Engine  (4D0 907 560 CN)

10:30:13 Group 044: Lambda Control (Aging Check: Bank 2 Sensor 2)
  680 /min  Engine Speed (G28)
  405.0°C  Catalytic Converter Bank 2 Temp.
  0.440 V  Lambda Voltage Bank 2 Sensor 1
  Test OFF  Lambda Sensor Aging Test B2S2

10:30:13 Group 046: Lambda Control (Catalytic Conversion Test Bank 1)
  680 /min  Engine Speed (G28)
  405.0°C  Catalytic Converter Bank 1 Temp.
  0.11  Catalytic Conversion Bank 1
  Cat B1 OK  Cat. Conversion Test Bank 1

10:30:13 Group 047: Lambda Control (Catalytic Conversion Test Bank 2)
  680 /min  Engine Speed (G28)
  405.0°C  Catalytic Converter Bank 2 Temp.
  0.00  Catalytic Conversion Bank 2
  Test OFF  Cat. Conversion Test Bank 2

--------------------------------------------------------------------------------
--------------------------------------------------------------------------------


                Address 01: Engine  (4D0 907 560 CN)

10:30:37 Group 044: Lambda Control (Aging Check: Bank 2 Sensor 2)
  680 /min  Engine Speed (G28)
  380.0°C  Catalytic Converter Bank 2 Temp.
  0.440 V  Lambda Voltage Bank 2 Sensor 1
  Test OFF  Lambda Sensor Aging Test B2S2

10:30:37 Group 030: Lambda Control (Sensor Status)
       111  Bank 1 Sensor 1
       111  Bank 1 Sensor 2
       111  Bank 2 Sensor 1
       100  Bank 2 Sensor 2

10:30:37 Group 047: Lambda Control (Catalytic Conversion Test Bank 2)
  680 /min  Engine Speed (G28)
  380.0°C  Catalytic Converter Bank 2 Temp.
  0.00  Catalytic Conversion Bank 2
  Test OFF  Cat. Conversion Test Bank 2

--------------------------------------------------------------------------------
--------------------------------------------------------------------------------


                Address 01: Engine  (4D0 907 560 CN)

10:42:01 Group 044: Lambda Control (Aging Check: Bank 2 Sensor 2)
  760 /min  Engine Speed (G28)
  300.0°C  Catalytic Converter Bank 2 Temp.
  0.435 V  Lambda Voltage Bank 2 Sensor 1
  Test OFF  Lambda Sensor Aging Test B2S2

10:42:01 Group 046: Lambda Control (Catalytic Conversion Test Bank 1)
  760 /min  Engine Speed (G28)
  300.0°C  Catalytic Converter Bank 1 Temp.
  0.11  Catalytic Conversion Bank 1
  Cat B1 OK  Cat. Conversion Test Bank 1

10:42:01 Group 047: Lambda Control (Catalytic Conversion Test Bank 2)
  760 /min  Engine Speed (G28)
  300.0°C  Catalytic Converter Bank 2 Temp.
  0.00  Catalytic Conversion Bank 2
  Test OFF  Cat. Conversion Test Bank 2

--------------------------------------------------------------------------------
--------------------------------------------------------------------------------


                Address 01: Engine  (4D0 907 560 CN)

10:42:16 Group 046: Lambda Control (Catalytic Conversion Test Bank 1)
  760 /min  Engine Speed (G28)
  295.0°C  Catalytic Converter Bank 1 Temp.
  0.11  Catalytic Conversion Bank 1
  Cat B1 OK  Cat. Conversion Test Bank 1

10:42:16 Group 039: Lambda Control (Sensor Exchange)
  5.17 g/s  Mass Air Flow Sensor (G70)
  0.690 V  Sensor Voltage Bank 1 Sensor 2
  0.435 V  Sensor Voltage Bank 2 Sensor 2
  Test OFF  Result Sensor Exchange

--------------------------------------------------------------------------------
--------------------------------------------------------------------------------


                Address 01: Engine  (4D0 907 560 CN)

10:46:04 Group 042: Lambda Control (Lambda Sensor Heating Bank 2)
  0.20 kOhm  Resistance Bank 2 Sensor 1
  Htg. S1 ON  Heater Condition Bank 2 Sensor 1
  25.50 kOhm  Resistance Bank 2 Sensor 2
  Htg. S2 ON  Heater Condition Bank 2 Sensor 2

10:46:04 Group 046: Lambda Control (Catalytic Conversion Test Bank 1)
  680 /min  Engine Speed (G28)
  415.0°C  Catalytic Converter Bank 1 Temp.
  0.11  Catalytic Conversion Bank 1
  Cat B1 OK  Cat. Conversion Test Bank 1

10:46:04 Group 039: Lambda Control (Sensor Exchange)
  6.42 g/s  Mass Air Flow Sensor (G70)
  0.485 V  Sensor Voltage Bank 1 Sensor 2
  0.435 V  Sensor Voltage Bank 2 Sensor 2
  Test OFF  Result Sensor Exchange

I need to go out to the car to get the engine fault and will updated this when I do, in a few hours. It has to do with B2S2 sensor response too slow.

Notice how some of the tests are still TEST OFF... they never turned to TEST ON (EXCEPT for 044: Lambda Sensor Aging Test B2S2 which had tested to BAD but then I turned car off and on again to see if I can repeat the test but it never went back to TEST ON). Are all these other tests tied to the B2S2 sensor and won't go to TEST ON until the oxygen sensors are OK?

 

[stefdds]

whereas the two original boxes I bought from Amazon had a copyright of 2012. I'm sending the Amazon ones back as defective.

Please be aware that ANY electrical parts from Amazon are more than likely to fail early or not work at all (properly)!

There are countless posts on the forum with "fails" and counterfeit parts so, Beware!

Sometimes you just have to pay up!

 

[atbro199]

Please be aware that ANY electrical parts from Amazon are more than likely to fail early or not work at all (properly)!

There are countless posts on the forum with "fails" and counterfeit parts so, Beware!

Sometimes you just have to pay up!

I can argue against your statement... as this is true with any auto parts supplier now-a-days, but that's for another forum. The two sensors I purchased from Amazon were new and unused but old, 2012. I ended up returning them as the RockAuto part was newer. I also bought a third sensor from my local Advance Auto, and while it is unused, it is also from 2012. I'll probably end up returning it.

 

[Uwe]

This ECU has an absolutely absurd number of Basic Settings related to getting Readiness set for the Oxygen Sensors and CATs. The catch is, they typically must be run in a specific sequence, and I don't have an documentation for that.

I assume you need Readiness set to pass an emissions test? I wonder if @EuroX might have an old Readiness cheat-sheet for this engine.

-Uwe-

 

[Dr Sheldon]

I took some time yesterday to run the car around with VCDS to try to get some better data into what's going on. After 200+ miles, a fault code was finally thrown, and it was a new one.

Quite annoying following this thread you clearly know best

I've bought parts from Amazon many times with success.

There's always the exception that proves the rule!

How I read this is that a mickey mouse O2 will be good for 2 -300 miles - But I knew that anyway !!

You would do better with a genuine one from a scrap car - Of course Genuine is the way forward !!

 

[atbro199]

Quite annoying following this thread you clearly know best

... what? You can unsubscribe from threads you know.

How I read this is that a mickey mouse O2 will be good for 2 -300 miles - But I knew that anyway !!

You would do better with a genuine one from a scrap car - Of course Genuine is the way forward !!

These are the only new OEM, or close to OEM, parts you can find. The car is 20+ years old and the original true OEM aren't manufactured anymore. These are Bosch. Also, junkyards won't carry these parts as again, they're for a chassis that is over 20 years old. I'm not even sure it's legal to sell emissions-related equipment second-hand... I know you cannot legally sell used catalytic converters.

This ECU has an absolutely absurd number of Basic Settings related to getting Readiness set for the Oxygen Sensors and CATs. The catch is, they typically must be run in a specific sequence, and I don't have an documentation for that.

I assume you need Readiness set to pass an emissions test? I wonder if @EuroX might have an old Readiness cheat-sheet for this engine.

-Uwe-

I'm far from an expert but I would wager that the reason the cats (at least Bank 2) aren't entering test mode is due to the oxygen sensor not entering test mode... but that's a hunch. I have had the Oxygen Sensor Heaters monitors pass in the past... but in Virginia, we can pass emissions with only one monitor set to Not Ready... I can't pass with three. I tried

Without adieu, here is the auto scan with the error code:

Chassis Type: 4B (4B - Audi A6/S6/RS6/allroad C5 (1998 > 2005))
Scan: 01 02 03 06 08 15 16 17 18 22 34 35 36 37 45 55 56 57 65 67
          75 76 77
 
VIN: WAUXU64B43N116243  
-------------------------------------------------------------------------------
Address 01: Engine        Labels: 077-907-559-ANK.clb
   Part No: 4D0 907 560 CN
   Component: 4.2L V8/5V      G   0001
   Coding: 06752
   Shop #: WSC 24253
   VCID: 74E783CC441E6536D7-5140
   WAUXU64B43N116243     AUZ7Z0C2391716

1 Fault Found:
16543 - Oxygen (Lambda) Sensor B2 S2
            P0159 - 35-00 - Response too Slow
Readiness: 0110 0001

-------------------------------------------------------------------------------
Address 02: Auto Trans        Labels: 01L-927-156.lbl
   Part No: 4B0 927 156 FH
   Component: AG5 01L 4.2l5V  USA 1314
   Coding: 00002
   Shop #: WSC 02334
   VCID: 72EB85D43E0A6B06C5-515E

No fault code found.

-------------------------------------------------------------------------------
Address 03: ABS Brakes        Labels: 4B0-614-517.lbl
   Part No: 4B0 614 517 E
   Component: ABS/ESP allrad      3428
   Coding: 06397
   Shop #: WSC 31414
   VCID: 2345B090B170B28EFE-5140

1 Fault Found:
01119 - Gear Recognition Signal
            35-10 - - - Intermittent

-------------------------------------------------------------------------------
Address 08: Auto HVAC        Labels: 4B0-820-043-MY2.lbl
   Part No: 4B0 820 043 AR
   Component: A6-Klimavollautomat 0208
   Coding: 00010
   Shop #: WSC 00000
   VCID: 6ADB9DB416DAA3C67D-2580

No fault code found.

-------------------------------------------------------------------------------
Address 15: Airbags        Labels: 4B0-959-655-AI84.lbl
   Part No: 4B0 959 655 Q
   Component: Airbag 8.4EP        3001
   Coding: 0000607
   Shop #: WSC 02334 785 00200
   VCID: 3E7361E46AD2FF66F1-5140

No fault code found.

-------------------------------------------------------------------------------
Address 17: Instruments        Labels: 4B0-920-xxx-17.lbl
   Part No: 4B0 920 981 Q
   Component: KOMBI+WEGFAHRS. VDO D12
   Coding: 03283
   Shop #: WSC 62859
   VCID: 346743CC049E253617-5140
   WAUXU64B43N116243     AUZ7Z0C2391716

1 Fault Found:
01304 - Radio
            49-10 - No Communications - Intermittent

-------------------------------------------------------------------------------
Address 35: Centr. Locks        Labels:. 4B0-962-258.clb
   Part No: 4B0 962 258 M
   Component: Central Lock/Alarm  D38
   Coding: 15977
   Shop #: WSC 02334
   VCID: 336540D00190220E0E-4F06

3 Faults Found:
01559 - Drivers Door
            59-10 - Can't Unlock - Intermittent
01561 - Rear left door
            59-10 - Can't Unlock - Intermittent
01562 - Rear right door
            59-10 - Can't Unlock - Intermittent

-------------------------------------------------------------------------------
Address 36: Seat Mem. Drvr        Labels: None
   Part No: 4B0 959 760 B
   Component: Sitzmemory R1 F     0204
   Coding: 00001
   Shop #: WSC 00000
   VCID: 2C575BACDCAE7DF64F-4B00

No fault code found.

-------------------------------------------------------------------------------
Address 37: Navigation        Labels: 4B0-919-887-BNS4.lbl
   Part No: 4B0 919 887 E
   Component: BNS 4.2 H05    BNO 0050
   VCID: 35617EC80FE43C3E20-4AE8

1 Fault Found:
65535 - Internal Control Module Memory Error
            00-00 - -

-------------------------------------------------------------------------------
Address 55: Headlight Range        Labels: 4Z7-907-357.lbl
   Part No: 4Z7 907 357
   Component: dynamische LWR       D09
   Coding: 00050
   Shop #: WSC 02334
   VCID: 0407D30C14BE55B6E7-4B4C

No fault code found.

End-------------------------(Elapsed Time: 05:27)--------------------------

 

[Dr Sheldon]

n Virginia, we can pass emissions with only one monitor set to Not Ready... I can't pass with three. I tried

1 Fault Found: 16543 - Oxygen (Lambda) Sensor B2 S2 P0159 - 35-00 - Response too Slow

In that case throw an o2 Simulator in there

MAGNUM Tuning Performance & Fuel Saver Parts - Accessories * Auto & Powersport upgrades - Manufacturer

Magnum Tuning makes top notch powersports performance parts, ECU fuel tunes, oxygen sensor simulators for car, ATV, boat, motorcycle, PWC. Free shipping.

www.magnumtuning.com

 

[Uwe]

In that case throw an o2 Simulator in there

-Uwe-

 

[atbro199]

Thanks for everybody's help.

I've had the car at the shop the past few days and they determined that it is a bad ground to the oxygen sensor circuit within the ECU, so it needs to be replaced. They clarified it isn't the heater circuit. They're replacing the ECU.

 

[EuroX]

Make sure they read the pin from the old ecm and adapt the new one otherwise immobilizer will be active.