OBD II Trouble Code Definitions

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OBD2 Diagnostic Trouble Code Tables
P0100 - P0199 | P0200 - P0299 | P0300 - P0399 | P0400 - P0499 | P0500 - P0599 | P0600 - P0699 | P0700 - P0799 | P0800 - P0899 | P1000 - P1099 | P1100 - P1199 | P1200 - P1299 | P1300 - P1399 | P1400 - P1499 | P1500 - P1599 | P1600 - P1699 | P1700 - P1799 | P1800 - P1899 |
  • - Monitor Testing Not Complete
  • P1001
    - KOER Not Able To Complete, KOER Aborted
  • P1083
    - Fuel Control Mixture Lean (Bank 1 Sensor 1)
  • - Fuel Control Mixture Rich (Bank 1 Sensor 1)
  • P1085
    - Fuel Control Mixture Lean (Bank 2 Sensor 1)
  • P1086
    - Fuel Control Mixture Rich (Bank 2 Sensor 1)
  • P1087
    - O2 Sensor Circuit Slow Response in Lean Control Range (Bank 1 Sensor 1)
  • P1088
    - O2 Sensor Circuit Slow Response in Rich Control Range (Bank 1 Sensor 1)
  • P1089
    - O2 Sensor Circuit Slow Response in Lean Control Range (Bank 1 Sensor 2)
  • P1090
    - Pre-Catalyst Fuel Trim Too Lean Bank 1
  • P1091
    - Pre-Catalyst Fuel Trim Too Rich Bank 1
  • - Pre-Catalyst Fuel Trim Too Lean Bank 2
  • - Pre-Catalyst Fuel Trim Too Rich Bank 2
  • - O2 Sensor Circuit Slow Response in Rich Control Range (Bank 2 Sensor 1)
  • P1095
    - O2 Sensor Circuit Slow Switching From Lean to Rich (Bank 1 Sensor 1)
  • P1096
    - O2 Sensor Circuit Slow Switching From Lean to Rich (Bank 2 Sensor 1)
  • P1097
    - O2 Sensor Circuit Slow Response after Coast Down Fuel Cutoff (Bank 1 Sensor 1)
  • P1098
    - O2 Sensor Circuit Slow Response after Coast Down Fuel Cutoff (Bank 2 Sensor 2)
    • Please go to our P1000-P1099 forum for aditional codes and for questions and answers about your particular trouble code.