Code result
P05D8
PCV Regulator Valve Control Circuit Open
Moderate severity
What it means
The control circuit of the electrically actuated PCV regulator valve has an open circuit. The ECU cannot adjust crankcase ventilation flow against engine load - typically affects emissions and oil consumption under high load.
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
Open in valve or harness
highOne of the most commonly reported causes for this code — check this first.
Pin pushed back out of connector body
lowLess common, but worth ruling out after the more likely causes.
Cracked solder joint inside the module or sensor
lowLess common, but worth ruling out after the more likely causes.
Related help
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