OBD2 Error Codes

Learn all about the P20A1 code, what causes reductant purge control valve performance issues, and how to diagnose and fix common issues to maintain optimal engine performance.

Learn all about the P20A2 code, what causes reductant purge control valve circuit low, and how to diagnose and fix common issues to maintain optimal engine performance.

Learn all about the P20A3 code, what causes the Reductant Purge Control Valve Circuit High, and how to diagnose and fix common issues to maintain optimal engine performance.

Learn all about the P20A4 code, what causes reductant purge control valve stuck open, and how to diagnose and fix common issues to maintain optimal engine performance.

Learn all about the P20A5 code, what causes reductant purge control valve stuck closed, and how to diagnose and fix common issues to maintain optimal engine performance.

Learn all about the P20A6 code, what causes reductant injection air pressure control valve circuit/open issues, and how to diagnose and fix common problems to maintain optimal engine performance.

Learn all about the P20A7 code, what causes reductant injection air pressure control valve performance issues, and how to diagnose and fix common problems to maintain optimal engine performance.

Learn all about the P20A8 code, what causes reductant injection air pressure control valve circuit low, and how to diagnose and fix common issues to maintain optimal engine performance.

Learn all about the P20A9 code, what causes the Reductant Injection Air Pressure Control Valve Circuit High issue, and how to diagnose and fix common issues to maintain optimal engine performance.

Learn all about the P20AA code, what causes the Reductant Injection Air Pressure Control Valve to be stuck open, and how to diagnose and fix common issues to maintain optimal engine performance.