What does it mean?
P1380 is a Powertrain (engine, transmission, fuel system) fault code. It indicates: Variable Cam Timing Solenoid 'A' Circuit Condition .
Symptoms
- MIL on, sometimes with cam timing performance codes
- Rough idle, most noticeable on a cold start
- Loss of low end torque or a flat feeling at higher engine speed
- Ticking or rattling noise from the front of the engine
- Hesitation during acceleration and higher fuel consumption
Likely causes
- Open circuit or short in the solenoid control wiring
- Failed solenoid coil with an open or shorted winding
- Clogged solenoid filter screen or sludge restricting oil flow to the actuator
- Corroded or loose connector at the solenoid
- Low engine oil level, degraded oil or the wrong viscosity
- Weak control module driver output for that solenoid
- Harness chafed or heat damaged where it runs across the valve cover
How to fix it
- Check oil level, condition and service history first, oil quality drives most cam timing faults
- Command the solenoid on and off with a scan tool and listen or feel for the click
- Measure the solenoid winding resistance and compare it with specification
- Check for battery voltage on the feed and a switching ground from the module at the connector
- Remove the solenoid, clean its filter screen and look for varnish and metal debris
- Inspect the harness across the valve cover for oil soaking and heat damage
- Replace the solenoid if it fails electrically or hydraulically, then confirm cam angle response in live data