Is It Safe to Drive With a P0020 Code?
Common Symptoms of a P0020 Fault
P0020 Symptoms at a Glance
Rough idle especially when cold
EML on
Loss of low-end torque on bank 2
Increased fuel consumption
Possible Causes of P0020
A P0020 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.
Common Causes of P0020
VVT Solenoid Wiring Fault — Bank 2
Wiring or connector to bank 2 cam actuator solenoid is damaged.
VVT Solenoid Failure — Bank 2
Bank 2 VVT solenoid has failed or is stuck.
Oil Pressure / Sludge Issue
Low oil pressure or sludge preventing bank 2 VVT operation.
Cam Phaser Wear — Bank 2
Bank 2 variable cam timing phaser has worn.
Why we don't list the exact part: A P0020 code tells you what's happening but not why. Replacing parts without diagnosis is the most common way drivers waste money. A proper diagnosis identifies the specific cause first.
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P0020 and Your MOT
A stored P0020 fault code will cause your car to fail its MOT. The engine management light will be illuminated during the test — an automatic failure. Get the fault diagnosed and repaired, then have the code cleared before booking your test.