Sticking or failed variable cam timing (VCT) solenoid; Sludge or debris blocking the VCT oil passage in the phaser or solenoid; Worn or damaged camshaft phaser assembly; Low engine oil level or degraded oil causing poor phaser response; Faulty camshaft position sensor or damaged wiring to it; PCM calibration issue or faulty PCM (rare)

DTC codes / Ford codes / P1383

P1383 · FordCam Timing Advance is Excessive

Q: What does code P1383 mean?

Cam Timing Advance is Excessive. P1383 on a Ford means the powertrain control module (PCM) has detected that the camshaft timing is advancing more than the commanded value during its self-test. The PCM compares the actual cam position from the camshaft position sensor against the desired advance and flags the code when the measured advance exceeds the calibrated limit.

P1383 on a Ford means the powertrain control module (PCM) has detected that the camshaft timing is advancing more than the commanded value during its self-test. The PCM compares the actual cam position from the camshaft position sensor against the desired advance and flags the code when the measured advance exceeds the calibrated limit.

SystemPowertrain

Code typeFord specific

SeverityMedium

Fix difficultyIntermediate

AreaIgnition system and misfire

Symptoms you may notice

Illuminated check engine light, often with no other noticeable symptoms
Rough idle or idle surge when the cam phaser is stuck advanced
Reduced engine power or poor acceleration from incorrect valve timing
Decreased fuel economy due to inefficient combustion
Occasional misfire or hesitation under light load
Hard starting or extended crank when the cam is over-advanced at startup

Common causes, most likely first

Sticking or failed variable cam timing (VCT) solenoid
Sludge or debris blocking the VCT oil passage in the phaser or solenoid
Worn or damaged camshaft phaser assembly
Low engine oil level or degraded oil causing poor phaser response
Faulty camshaft position sensor or damaged wiring to it
PCM calibration issue or faulty PCM (rare)

How to diagnose and fix it

Check engine oil level and condition; top off or change oil if contaminated
Inspect the VCT solenoid for sludge and test its resistance and function
Remove and clean the VCT solenoid and oil passages, then retest
Verify camshaft position sensor signal with a scan tool or oscilloscope
Compare commanded versus actual cam timing using a scan tool to confirm the fault
Replace the VCT solenoid or phaser if cleaning does not resolve the over-advance
Clear the code and perform a road test to confirm the repair

Oil quality drives VCT codes on Fords

A sticking VCT solenoid is the most common cause of P1383 on Ford engines, and it often sets no drivability symptoms beyond the light.
Dirty or incorrect-viscosity oil can cause the phaser to over-advance without any mechanical wear, so an oil change sometimes clears the code.
The code can be set by a camshaft position sensor that is slow to respond rather than by a true mechanical over-advance.
Technicians who replace the phaser without checking the solenoid often see the code return because the solenoid was the real culprit.
On some Ford engines, a PCM calibration update addresses false P1383 setting under specific operating conditions.

Can I keep driving with P1383?

You can usually drive the vehicle short distances to a repair shop, but avoid heavy acceleration or sustained high speeds because over-advanced cam timing can cause misfires and increased exhaust temperatures. If the engine runs rough or loses power, stop driving and have it towed.

Tools that help

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Guidance is general and written for Ford vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.