Code result
P05EC
Cold Start Injection Timing Performance
Moderate severity
What it means
During cold-start the ECU adjusts injection timing (post-injection on diesels, intake-stroke timing on direct-injection petrols) to support catalyst light-off. The strategy does not deliver the expected timing - injector response slow or sensor offset.
Is it safe to drive?
Use caution
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical.
Most likely causes
Injectors slow when cold
highOne of the most commonly reported causes for this code — check this first.
Related help
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