Camshaft Position Sensor B Circuit Malfunction
Findings, check these first
- Failed cam sensor B
- Damaged B circuit wiring
- Oil contamination on sensor B
- Connector fault
- Timing fault affecting bank 2 cam
Standard procedure
- Compare bank 1 and bank 2 cam signals
- Inspect sensor B for oil
- Check B circuit wiring
- Verify timing components if both banks erratic
- Replace sensor B after circuit checks
Code lookup
Type a code above, or start from a symptom or a common code.
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Sources and review
Review: checked against the recorded source material.
- OBDII.pro: P1340 Ford definition
live reference page (obdii.pro)
Supports: Ford-family meaning for P1340: Camshaft Position Sensor B Circuit Malfunction
Fetched directly. obdii.pro is a publisher independent of the engine-codes family.
- P1340 FORD Code: Meaning, Causes, and Symptoms | OBD2 Codes
live reference page (obd2-codes.co)
Supports: Ford meaning for P1340: Camshaft Position Sensor ‘B’ Circuit Malfunction
Fetched directly. obd2-codes.co phrasing matches the engine-codes family, so it counts as one publisher.
Last updated 2026-09-05.
Report a correction for P1340. Include your vehicle, the issue and a source if you have one.