ST?ID=104013
2012 Passat TDI, CKRA engine w/ DSG transmission
Cust states engine would start and run fine, but put into gear and engine would bog down and die. Difficult to free rev engine, 2500 to 3000 RPMs tops.
P026A 000618 Charge Air Cooler: Efficiency Below Threshold
P0101 000257 Mass Air Flow Sensor (G70): Implausible Signal
P2209 008713 Sense Circuit for Heater for NOx Sensor 1 Bank 1: Implausible Signal
Unplugged MAF, cleared DTCs several times in a row, no change. No restrictions with the exhaust system. No restrictions found for intake side or intercooler. Fuel filter was replaced prior to calling, no glitter / metal shavings in fuel system.
Further digging found the following in live data:
IDE04938 - Sensor for temp after charge air cooler: raw value = 110°C
Looking at other examples of known good engine with location IDE04938 - Sensor for temp after charge air cooler: raw value, the highest value found was 55C, most were in the 30C range.
This data is from the G42 sensor (G42 / G31 / GX9) in the wiring diagram. Electrical paths to the sensor (wiring / terminals) were to factory design. Sensor was just reading a stupid high value. A new sensor was installed, DTCs cleared a few times and the engine is currently working to factory design.
Another classic case of "fixing cars is easy, diagnosing them is the hard part".
2012 Passat TDI, CKRA engine w/ DSG transmission
Cust states engine would start and run fine, but put into gear and engine would bog down and die. Difficult to free rev engine, 2500 to 3000 RPMs tops.
P026A 000618 Charge Air Cooler: Efficiency Below Threshold
P0101 000257 Mass Air Flow Sensor (G70): Implausible Signal
P2209 008713 Sense Circuit for Heater for NOx Sensor 1 Bank 1: Implausible Signal
Unplugged MAF, cleared DTCs several times in a row, no change. No restrictions with the exhaust system. No restrictions found for intake side or intercooler. Fuel filter was replaced prior to calling, no glitter / metal shavings in fuel system.
Further digging found the following in live data:
IDE04938 - Sensor for temp after charge air cooler: raw value = 110°C

Looking at other examples of known good engine with location IDE04938 - Sensor for temp after charge air cooler: raw value, the highest value found was 55C, most were in the 30C range.
This data is from the G42 sensor (G42 / G31 / GX9) in the wiring diagram. Electrical paths to the sensor (wiring / terminals) were to factory design. Sensor was just reading a stupid high value. A new sensor was installed, DTCs cleared a few times and the engine is currently working to factory design.
Another classic case of "fixing cars is easy, diagnosing them is the hard part".