P Codes – OBD2 Powertrain Codes

Learn all about the P2684 code, what causes actuator supply voltage "C" circuit/open issues, and how to diagnose and fix common problems to maintain optimal vehicle performance.

Learn all about the P2685 code, what causes actuator supply voltage "C" circuit low, and how to diagnose and fix common issues to maintain optimal transmission performance.

Learn all about the P2686 code, what causes actuator supply voltage "C" circuit high, and how to diagnose and fix common issues to maintain optimal transmission performance.

Learn all about the P2687 code, what causes fuel supply heater control circuit issues, and how to diagnose and fix common problems to maintain optimal engine performance.

Learn all about the P2688 code, what causes fuel supply heater control circuit low, and how to diagnose and fix common issues to maintain optimal engine performance.

Learn all about the P2689 code, what causes fuel supply heater control circuit high, and how to diagnose and fix common issues to maintain optimal engine performance.

Learn all about the P268A code, what causes fuel injector calibration not learned/programmed, and how to diagnose and fix common issues to maintain optimal engine performance.

Learn all about the P268B code, what causes high pressure fuel pump calibration not learned/programmed, and how to diagnose and fix common issues to maintain optimal engine performance.

Learn all about the P268C code, what causes cylinder 1 injector data incompatibility, and how to diagnose and fix common issues to maintain optimal engine performance.

Learn all about the P268D code, what causes cylinder 2 injector data incompatible, and how to diagnose and fix common issues to maintain optimal engine performance.