P Codes – OBD2 Powertrain Codes

Learn all about the P201A code, what causes reductant injection valve circuit range/performance issues, and how to diagnose and fix common problems to maintain optimal engine performance.

Learn all about the P2020 code, what causes issues with the Intake Manifold Runner Position Sensor, and how to diagnose and fix common problems to maintain optimal engine performance.

Learn all about the P2021 code, what causes intake manifold runner position sensor/switch circuit low, and how to diagnose and fix common issues to maintain optimal engine performance.

Learn all about the P2025 code, what causes evaporative emissions (EVAP) fuel vapor temperature sensor issues, and how to diagnose and fix common problems to maintain optimal engine performance.

Learn all about the P2029 code, what causes fuel fired heater disabled, and how to diagnose and fix common issues to maintain optimal engine performance.

Learn all about the P202C code, what causes reductant tank heater control circuit high, and how to diagnose and fix common issues to maintain optimal engine performance.

Learn all about the P202F code, what causes reductant/regeneration supply control circuit issues, and how to diagnose and fix common problems to maintain optimal engine performance.

Learn all about the P2030 code, what causes fuel fired heater performance issues, and how to diagnose and fix common problems to maintain optimal engine performance.

Learn all about the P202E code, what causes reductant injection valve circuit issues, and how to diagnose and fix common problems to maintain optimal engine performance.

Learn all about the P2022 code, what causes intake manifold runner position sensor/switch circuit high, and how to diagnose and fix common issues to maintain optimal engine performance.