P23ECCamshaft B Position Signal Output Circuit/Open (Bank 1)
- Generic OBD-II code · Powertrain
- Can trigger limp mode
- How the car detects it
- P23EC belongs to the camshaft B group – on most layouts the exhaust camshaft – and refers to bank 1, the side with cylinder 1. The ECM rebroadcasts the phase signal of that camshaft on a dedicated output wire, and P23EC reports that this wire, or the driver stage feeding it, shows an open or undefined circuit condition. No manufacturer publishes P23EC; the closest documented logic is GM's for P2614 to P2616 on the camshaft A output, where an open of 200 kOhm or more is detected during the low-side test. CARB requires output circuits to be checked whenever another diagnostic relies on them. Low or ground faults are P23ED, high or battery faults P23EE. Drivability normally stays intact.
- What you may notice
- Stored code, often found during a routine scan
- Receiving module runs on substitute values
- Likely causes
- LikelyOpen circuit in the camshaft B output wire
- PossibleConnector at the ECM or receiver not fully latched
- RareInput stage of the receiving module defective
- 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.