P2090: Camshaft Position B Actuator Control Circuit Low (Bank 1)
Standardized SAE J2012 code · P20xx — Fuel & air metering and auxiliary emission controls
What does P2090 mean?
Drive voltage to the exhaust VVT oil control valve on bank 1 is below the lower limit. Same failure pattern as P2088 but for the exhaust cam phaser.
The code tells you which monitor failed, not which part is broken. Test before replacing parts.
Symptoms
- Check engine light on
- Power loss especially in mid-rpm range
- Possible rough idle or stalling
- Increased fuel consumption
Common causes
- High Drive line shorted to ground
- Medium Exhaust VVT solenoid internally shorted
- Low Connector pins corroded - high contact resistance
Likelihood is a general estimate across vehicles; your make and model may differ.
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