P0390
Camshaft Position Sensor B Circuit Bank 2
Generic code
Ignition System
High severity
Moderate repair
Free on OBD DashX
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What P0390 means
- The fault code P0390 indicates that there is an issue with the Camshaft Position Sensor Circuit 'B'. This circuit is responsible for monitoring the position of the camshaft in relation to the crankshaft. A malfunction in this circuit may result in poor engine performance or failure to start.
Possible symptoms
- Illuminated check engine light
- Engine stalling or failure to start
- Rough idling or poor acceleration
- Reduced engine power
Possible causes
- Faulty Camshaft Position Sensor
- Damaged or corroded wiring in the Camshaft Position Sensor Circuit 'B'
- Loose or damaged electrical connections in the Camshaft Position Sensor Circuit 'B'
- Failed Engine Control Module (ECM)
Related parts
- Camshaft Position Sensor: The camshaft position sensor monitors the position of the camshaft to regulate fuel injection. Problems lead to stalling or car failing to start.
Possible solutions
- Replace the Camshaft Position Sensor
- Check and repair any damaged or corroded wiring in the Camshaft Position Sensor Circuit 'B'
- Tighten or replace any loose or damaged electrical connections in the Camshaft Position Sensor Circuit 'B'
- Replace the Engine Control Module (ECM) if necessary
Free on OBD DashX
P0390 on OBD DashX
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