P23EDCamshaft B Position Signal Output Circuit Low (Bank 1)
- Generic OBD-II code · Powertrain
- Can trigger limp mode
- How the car detects it
- With P23ED the ECM detects that its camshaft B output for bank 1 reads low although it has released the line to go high. Most often a harness section rubbing through to the engine block, a crushed connector pin or a shorted input in the receiving module is to blame. Measured analogies come from GM: the bank 1 camshaft A output code P2615 uses a ground resistance of at most 0.5 ohm, requires the engine to be out of crank and is rated Type C, so no warning lamp. Whether makers who use P23ED light the MIL is not published. Because the sensor feeding the ECM is not involved, replacing the camshaft sensor will not clear the code; a voltage-drop test of the output line between both modules is the sensible first step.
- What you may notice
- Code stored, engine performance unaffected
- Downstream module reports missing camshaft signal
- Possible fallback behaviour in transmission or hybrid functions
- Likely causes
- LikelyHarness rubbed through against the engine block
- PossibleCrushed or bent connector pin touching ground
- PossibleShorted input in the receiving module
- RareECM output stage damaged
- Repair
- Medium · Usually a job for a workshop.Typical cost: €50 – €900
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.