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OBDII/EOBD diagnostics trouble codes definition

If your car supports OBD II or EOBD, then you can already use almost 5000 generic OBDII codes. These codes are from PowerTrain series (P0XXX, P2XXX, P34XX), Body Series (B0XXX), Chassis series (C0XXX), Network series (U0XXX, U2XXX, U3XXX).

Also there is a list of more than 13500 additional manufacturer specific codes.

Supported manufacturers with specific OBD2 codes:


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Definition of check engine code P1127:

Citroen/Peugeot

Exhaust Not Warm, Downstream O2 Sensor

Daewoo

CTRL SLEEVE POS SNSR MAL

Ford

Exhaust Not Warm, Downstream O2 Sensor

Hyundai

Long Term Fuel Trim Multiplier Too Rich

Jaguar

Exhaust not warm enough, downstream oxygen sensors not tested

Lamborghini

Long term fuel trim multiplicative air system low

Lexus

ECTS Actuator Power Source Circuit Malfunction

Lincoln

Exhaust Not Warm Enough - Downstream O2 Sensor Not Tested

Mazda

HO2S Bank 1 Sensor 2 Heater Not On During Key On Engine Running Self Test

Mercedes

H02S - 12 heater not ON during KOER self test

Mercury

Exhaust Not Warm Enough - Downstream O2 Sensor Not Tested

Oldsmobile

Exhaust Not Warm Enough - Downstream O2 Sensor Not Tested

Porsche

Oxygen Sensing

Saab

Multiplicative Adaptation, Bank 1 Min. Value

Scion

ETCS Actuator Power Source Circuit.

Toyota

ETCS Actuator Power Source Circuit Malfunction

Volkswagen/Audi

Long Term Fuel Trim mult.,Bank1 System too Rich

Volvo

Long Term Fuel Trim mult.,Bank1 System too Rich

GM

Open Loop CO Adjust Circuit
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