Is It Safe to Drive With a P0017 Code?
Common Symptoms of a P0017 Fault
Rough idle
Hard starting
Loss of power
EML on
Possible rattle on startup
Possible Causes of P0017
A P0017 code can be triggered by faults across several systems. Identifying the exact root cause requires proper diagnostic equipment and live data — not just reading the code.
Timing Chain Stretch
Timing chain has stretched causing exhaust cam misalignment.
Exhaust VVT Solenoid Fault
Exhaust cam VVT solenoid stuck or faulty.
Cam Phaser Fault
Exhaust cam phaser not operating correctly.
Sensor Fault
Exhaust cam position sensor giving incorrect reading.
Why we don't list the exact part: A P0017 code tells you what's happening but not why. Replacing parts based on the code alone is the most common way drivers waste money. A proper diagnosis identifies the specific cause first.
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P0017 and Your MOT
A stored P0017 fault code will cause your car to fail its MOT. The engine management light will be illuminated during the test — an automatic failure under current MOT standards. Even if the light temporarily clears, the code remains in ECU memory and can be read by testers.
Get the fault diagnosed and repaired first, then have the code cleared and confirm the light stays off before booking your MOT.