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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 P1166:

Acura:

Primary HO2S (No. 1) Heater System Electrical

Daewoo:

IDLE RATIO TRIM MAL

Honda:

Air / Fuel Ratio (A/F) Sensor (Sensor 1) Heater System Electrical Problem A/F sensor heater,or Heated Oxgen Sensor Sensor1 (Primary HO2S) Heater Circuit Malfunction (HO2S)

Hyundai:

HO2S Bank 1 Sensor 1 Controller Adaptive Diagnosis Fault (Bank 1)

Nissan:

Heated O2 Sensor 2

Volkswagen/Audi:

Bank1,Long Term Fuel Trim,Range 2 Rich Limit Exceeded

Volvo:

Bank1,Long Term Fuel Trim,Range 2 Rich Limit Exceeded

GM:

Oxygen Sensor System - Low Voltage During Power Enrichment (Bank 1 - Sensor 1)