OBD2 Error Codes

Learn all about the P20F1 code, what causes SCR NOx pre-catalyst over temperature, and how to diagnose and fix common issues to maintain optimal engine performance.

Learn all about the P20F2 code, what causes SCR NOx catalyst efficiency below threshold, and how to diagnose and fix common issues to maintain optimal engine performance.

Learn all about the P20F3 code, what causes SCR NOx pre-catalyst efficiency below threshold, and how to diagnose and fix common issues to maintain optimal engine performance.

Learn all about the P20F4 code, what causes reductant consumption too low, and how to diagnose and fix common issues to maintain optimal engine performance.

Learn all about the P20F5 code, what causes reductant consumption too high, and how to diagnose and fix common issues to maintain optimal engine performance.

Learn all about the P20F6 code, what causes reductant injection valve stuck open, and how to diagnose and fix common issues to maintain optimal engine performance.

Learn all about the P20F7 code, what causes reductant injection valve stuck open, and how to diagnose and fix common issues to maintain optimal engine performance.

Learn all about the P2100 code, what causes throttle actuator control motor circuit/open issues, and how to diagnose and fix common problems to maintain optimal engine performance.

Learn all about the P2101 code, what causes throttle actuator "A" control motor circuit range/performance issues, and how to diagnose and fix common problems to maintain optimal engine performance.

Learn all about the P2102 code, what causes throttle actuator "A" control motor circuit low, and how to diagnose and fix common issues to maintain optimal engine performance.