Critical Safety risk Powertrain-code
P0027
P0027 Exhaust Valve Control Solenoid Circuit Range/Perf. B1
P0027 Exhaust Valve Control Solenoid Circuit Range/Perf. B1
Pull over safely and book service immediately
This code is flagged as a safety risk and rated Critical. Avoid driving until a technician has inspected the vehicle.
Symptoms
- MIL (Malfunction Indicator Lamp) illumination
- Poor acceleration or engine performance
- Decreased fuel economy
Likely causes
- Low engine oil level or contaminated oil
- Clogged oil system
- Malfunctioning control solenoid
- Malfunctioning camshaft actuator
- Timing chain/belt loose or incorrectly adjusted
- Malfunctioning ECM/PCM
Labor estimate
2h typical
Range: 1h – 4h
Parts cost
$0 – $500
Range varies by year/make/model
Information shown is reference-grade and may vary by vehicle. Always have a qualified technician confirm the cause before any repair.