OBD-II · CODE FAMILY
Codes P10xx — what they mean
P10xx is a family of 22 manufacturer-specific OBD2 codes covering powertrain and electrical faults. Each P10xx code below links to its own page with causes, diagnosis and the parts to fix it.
22 codesPowertrain systems
FAMILY
RangeP1000–P1098
Codes22
TROUBLEATLAS APP
01All codes in this family
One rich, indexed page — not thousands of empty ones. Each code links to its own page.
| Code | Meaning — click to open the code page | System | Severity |
|---|---|---|---|
| P1000 | The P1000 code is one that can be a little tricky to underst → /auto/codes/p1000/ The P1000 code is one that can be a little tricky to understand, especially because it has different meanings across brands. Yet, it’s imperative to u | Powertrain | Medium |
| P1001 | KOER Test Cannot Be Completed → /auto/codes/p1001/ KOER Test Cannot Be Completed | Powertrain | Medium |
| P1031 | HO2S Heater Current Monitor Control Circuit Sensors 1 → /auto/codes/p1031/ HO2S Heater Current Monitor Control Circuit Sensors 1 | Powertrain | Medium |
| P1032 | HO2S Heater Warm Up Control Circuit Sensors 1 → /auto/codes/p1032/ HO2S Heater Warm Up Control Circuit Sensors 1 | Powertrain | Medium |
| P1039 | Vehicle Speed Signal Missing or Improper → /auto/codes/p1039/ Vehicle Speed Signal Missing or Improper | Powertrain | Medium |
| P1051 | Brake Switch Signal Missing or Improper → /auto/codes/p1051/ Brake Switch Signal Missing or Improper | Powertrain | Medium |
| P1083 | Fuel Control Mixture Lean Bank 1 Sensor 1 → /auto/codes/p1083/ Fuel Control Mixture Lean Bank 1 Sensor 1 | Powertrain | Medium |
| P1084 | Fuel Control Mixture Rich Bank 1 Sensor 1 → /auto/codes/p1084/ Fuel Control Mixture Rich Bank 1 Sensor 1 | Powertrain | Medium |
| P1085 | Fuel Control Mixture Lean Bank 2 Sensor 1 → /auto/codes/p1085/ Fuel Control Mixture Lean Bank 2 Sensor 1 | Powertrain | Medium |
| P1086 | Fuel Control Mixture Rich Bank 2 Sensor 1 → /auto/codes/p1086/ Fuel Control Mixture Rich Bank 2 Sensor 1 | Powertrain | Medium |
| P1087 | O2 Sensor Circuit Slow Response in Lean Control Range Bank 1 → /auto/codes/p1087/ O2 Sensor Circuit Slow Response in Lean Control Range Bank 1 Sensor 1 | Powertrain | Medium |
| P1088 | O2 Sensor Circuit Slow Response in Rich Control Range Bank 1 → /auto/codes/p1088/ O2 Sensor Circuit Slow Response in Rich Control Range Bank 1 Sensor 1 | Powertrain | Medium |
| P1089 | O2 Sensor Circuit Slow Response in Lean Control Range Bank 1 → /auto/codes/p1089/ O2 Sensor Circuit Slow Response in Lean Control Range Bank 1 Sensor 2 | Powertrain | Medium |
| P1090 | Pre-Catalyst Fuel Trim Too Lean Bank 1 → /auto/codes/p1090/ Pre-Catalyst Fuel Trim Too Lean Bank 1 | Powertrain | Medium |
| P1091 | Pre-Catalyst Fuel Trim Too Rich Bank 1 → /auto/codes/p1091/ Pre-Catalyst Fuel Trim Too Rich Bank 1 | Powertrain | Medium |
| P1092 | Pre-Catalyst Fuel Trim Too Lean Bank 2 → /auto/codes/p1092/ Pre-Catalyst Fuel Trim Too Lean Bank 2 | Powertrain | Medium |
| P1093 | Pre-Catalyst Fuel Trim Too Rich Bank 2 → /auto/codes/p1093/ Pre-Catalyst Fuel Trim Too Rich Bank 2 | Powertrain | Medium |
| P1094 | O2 Sensor Circuit Slow Response in Rich Control Range Bank 2 → /auto/codes/p1094/ O2 Sensor Circuit Slow Response in Rich Control Range Bank 2 Sensor 1 | Powertrain | Medium |
| P1095 | O2 Sensor Circuit Slow Switching From Lean to Rich Bank 1 Se → /auto/codes/p1095/ O2 Sensor Circuit Slow Switching From Lean to Rich Bank 1 Sensor 1 | Powertrain | Medium |
| P1096 | O2 Sensor Circuit Slow Switching From Lean to Rich Bank 2 Se → /auto/codes/p1096/ O2 Sensor Circuit Slow Switching From Lean to Rich Bank 2 Sensor 1 | Powertrain | Medium |
| P1097 | O2 Sensor Circuit Slow Response After Coast Down Fuel Cut-of → /auto/codes/p1097/ O2 Sensor Circuit Slow Response After Coast Down Fuel Cut-off Bank 1 Sensor 2 | Powertrain | Medium |
| P1098 | O2 Sensor Circuit Slow Response After Coast Down Fuel Cutoff → /auto/codes/p1098/ O2 Sensor Circuit Slow Response After Coast Down Fuel Cutoff Bank 2 Sensor 2 | Powertrain | Medium |
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