Is It Safe to Drive With a P0615 Code?
Common Symptoms of a P0615 Fault
EML on
Car may not start or cranks intermittently
Clicking sound when starting without engine cranking
Starter motor not engaging
Possible Causes of P0615
A P0615 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.
Starter Relay Wiring Fault
Wiring to the starter relay is damaged or has high resistance.
Starter Relay Failure
The relay itself has failed.
Ignition Switch Fault
The ignition switch circuit to the starter relay has a fault.
Battery / Voltage Issue
Low voltage preventing the relay from operating correctly.
Why we don't list the exact part: A P0615 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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P0615 and Your MOT
A stored P0615 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.