What does code P23F1 mean?

Q: What does code P23F1 mean?

Camshaft B Position Signal Output Circuit High Bank 2. P23F1 indicates that the powertrain control module (PCM) has detected an abnormally high voltage on the output circuit for the bank 2 camshaft B position signal, which typically points to an open circuit, a short to voltage, or a faulty sensor. The PCM monitors this circuit to determine the camshaft's position for variable valve timing and fuel injection timing, and a high signal means the expected voltage range has been exceeded.

DTC codes / P23xx · Ignition system and misfire / P23F1

P23F1Camshaft B Position Signal Output Circuit High Bank 2

P23F1 indicates that the powertrain control module (PCM) has detected an abnormally high voltage on the output circuit for the bank 2 camshaft B position signal, which typically points to an open circuit, a short to voltage, or a faulty sensor. The PCM monitors this circuit to determine the camshaft's position for variable valve timing and fuel injection timing, and a high signal means the expected voltage range has been exceeded.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaIgnition system and misfire

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.