Clean Diesel Readiness Status (non UDS Controllers) - CBEA CJAA 2.0l CR-TDI
Note: The information below is for non-UDS ECM controller, for UDS ECM Controllers it is suggested to check the Diesel
Readiness Status using the OBD-II function of the Ross-Tech scan tool.
Measuring Value Block Group [089] - EOBD (European On Board Diagnostics)
Field 1 = 0000 0000 - EOBD Data A - (Fault codes stored and Check Engine Light Status)
x??? ???? - Fault code count in binary
?xxx xxxx - Check Engine Light On = [1], Off = [0]
Field 2 = 0000 0000 - EOBD Data B
?xxx xxxx - N/A
x?xx xxxx - Comprehensive component monitor readiness status, Incomplete = [1], Complete = [0]
xx?x xxxx - Fuel system monitor readiness status, Incomplete = [1], Complete = [0]
xxx? xxxx - Misfire monitor readiness status, Incomplete = [1], Complete = [0]
xxxx ?xxx - Ignition monitors - Spark or Compression , Supported Function = [1]
xxxx x?xx - Comprehensive component monitors, Supported Function = [1], Not Supported = [0]
xxxx xx?x - Fuel system monitor, continuous, Supported Function = [1], Not Supported = [0]
xxxx xxx? - Misfire monitor, continuous, Supported Function = [1], Not Supported = [0]
Field 3 = 0000 0000 - EOBD Data C – (Monitors that are supported)
?xxx xxxx - EGR/VVT System Monitor, Supported Function = [1], Not Supported = [0]
x?xx xxxx - DPF (Diesel Particle Filter) Monitor, Supported Function = [1], Not Supported = [0]
xx?x xxxx - Exhaust Gas Sensor Monitor, Supported Function = [1], Not Supported = [0]
xxx? xxxx - Not used on diesel vehicles at this time
xxxx ?xxx - Indicates Boost Pressure System Monitor, Supported Function = [1], Not Supported = [0]
xxxx x?xx - Not used on diesel vehicles at this time
xxxx xx?x - NOx/SCR After-treatment Monitor, Supported Function = [1], Not Supported = [0]
xxxx xxx? - NMHC Catalyst Monitor, Supported Fuction = [1], Not Supported = [0]
Field 4 = 0000 0000 - EOBD Data D – (Readiness status of the supported systems)
?xxx xxxx - EGR/VVT System monitor readiness status, Incomplete = [1], Complete = [0]
x?xx xxxx - DPF readiness status, Incomplete = [1], Complete = [0]
xx?x xxxx - Exhaust Gas Sensor monitor readiness status, Incomplete = [1], Complete = [0]
xxx? xxxx - Not used on diesel vehicles at this time
xxxx ?xxx - Boost pressure system monitor readiness Status, Incomplete = [1], Complete = [0]
xxxx x?xx - Not used on diesel vehicles at this time
xxxx xx?x - Readiness status of NOx/SCR After-treatment Monitor, Incomplete = [1], Complete = [0]
xxxx xxx? - Readiness status of NMHC Catalyst Monitor, Incomplete = [1], Complete = [0]
- Abbreviations -
DPF = Diesel Particle Filter
NOx = Oxides of nitrogen
SCR = Selective catalytic reduction systems
NMHC = Non-methane hydrocarbons
EGR = Exhaust Gas Recirculation
VVT = Variable valve timing
- Ignition Type -
Spark = Gasoline
Compression = Diesel
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This information can be very important for repair shops and owners of vehicles that are registered in states that conduct routine checks of the Diesel Readiness Status during their Smog Checks and/or Car Inspections.
It also important to note that when the codes are cleared, this will reset the readiness bits and in order to reset the Clean Diesel Readiness Status it may be necessary to perform extended road tests or driving cycles. Setting the readiness bits for the DPF will require at least one DPF regeneration cycle.
This Readiness information can be found in the [01-Engine] Measuring Value Blocks in the form of binary data. Below is a guide that will help you to read and understand the binary data.
Note: The information below is for non-UDS ECM controller, for UDS ECM Controllers it is suggested to check the Diesel
Readiness Status using the OBD-II function of the Ross-Tech scan tool.
Measuring Value Block Group [089] - EOBD (European On Board Diagnostics)

Field 1 = 0000 0000 - EOBD Data A - (Fault codes stored and Check Engine Light Status)
x??? ???? - Fault code count in binary
?xxx xxxx - Check Engine Light On = [1], Off = [0]
Field 2 = 0000 0000 - EOBD Data B
?xxx xxxx - N/A
x?xx xxxx - Comprehensive component monitor readiness status, Incomplete = [1], Complete = [0]
xx?x xxxx - Fuel system monitor readiness status, Incomplete = [1], Complete = [0]
xxx? xxxx - Misfire monitor readiness status, Incomplete = [1], Complete = [0]
xxxx ?xxx - Ignition monitors - Spark or Compression , Supported Function = [1]
xxxx x?xx - Comprehensive component monitors, Supported Function = [1], Not Supported = [0]
xxxx xx?x - Fuel system monitor, continuous, Supported Function = [1], Not Supported = [0]
xxxx xxx? - Misfire monitor, continuous, Supported Function = [1], Not Supported = [0]
Field 3 = 0000 0000 - EOBD Data C – (Monitors that are supported)
?xxx xxxx - EGR/VVT System Monitor, Supported Function = [1], Not Supported = [0]
x?xx xxxx - DPF (Diesel Particle Filter) Monitor, Supported Function = [1], Not Supported = [0]
xx?x xxxx - Exhaust Gas Sensor Monitor, Supported Function = [1], Not Supported = [0]
xxx? xxxx - Not used on diesel vehicles at this time
xxxx ?xxx - Indicates Boost Pressure System Monitor, Supported Function = [1], Not Supported = [0]
xxxx x?xx - Not used on diesel vehicles at this time
xxxx xx?x - NOx/SCR After-treatment Monitor, Supported Function = [1], Not Supported = [0]
xxxx xxx? - NMHC Catalyst Monitor, Supported Fuction = [1], Not Supported = [0]
Field 4 = 0000 0000 - EOBD Data D – (Readiness status of the supported systems)
?xxx xxxx - EGR/VVT System monitor readiness status, Incomplete = [1], Complete = [0]
x?xx xxxx - DPF readiness status, Incomplete = [1], Complete = [0]
xx?x xxxx - Exhaust Gas Sensor monitor readiness status, Incomplete = [1], Complete = [0]
xxx? xxxx - Not used on diesel vehicles at this time
xxxx ?xxx - Boost pressure system monitor readiness Status, Incomplete = [1], Complete = [0]
xxxx x?xx - Not used on diesel vehicles at this time
xxxx xx?x - Readiness status of NOx/SCR After-treatment Monitor, Incomplete = [1], Complete = [0]
xxxx xxx? - Readiness status of NMHC Catalyst Monitor, Incomplete = [1], Complete = [0]
- Abbreviations -
DPF = Diesel Particle Filter
NOx = Oxides of nitrogen
SCR = Selective catalytic reduction systems
NMHC = Non-methane hydrocarbons
EGR = Exhaust Gas Recirculation
VVT = Variable valve timing
- Ignition Type -
Spark = Gasoline
Compression = Diesel
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