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DTC codes / P20xx · Fuel and air metering and auxiliary emission controls / P2092

P2092'A' Camshaft Position Actuator Control Circuit Low (Bank 2)

P2092 indicates that the powertrain control module (PCM) has detected an abnormally low voltage on the control circuit for the bank 2 'A' camshaft position actuator, which is the solenoid that adjusts camshaft timing on that cylinder bank. The PCM commands a duty cycle to move the actuator, and when the feedback or circuit voltage falls below the expected threshold, it sets this code and may disable variable valve timing.

SystemPowertrain
Code typeGeneric (all makes)
SeverityMedium
Fix difficultyIntermediate
AreaFuel and air metering and auxiliary emission controls

Symptoms you may notice

  • Illumination of the check engine light, often with no other noticeable symptoms.
  • Rough idle or unstable engine operation, especially when cold.
  • Reduced engine power or sluggish acceleration due to disabled variable valve timing.
  • Poor fuel economy or increased emissions.
  • In some cases, a rattling or ticking noise from the affected cylinder bank if the actuator is stuck.
  • Possible engine misfire or stalling if the camshaft timing is severely affected.

Common causes, most likely first

  1. Faulty bank 2 camshaft position actuator solenoid, such as a shorted or open internal coil.
  2. Damaged or corroded wiring or connector at the actuator solenoid, including chafed wires or pushed-back pins.
  3. Low oil pressure or sludged oil preventing the actuator from moving freely, which can cause the solenoid to draw excessive current and set a low-voltage code.
  4. Failed PCM driver for the actuator control circuit, though this is less common.
  5. Aftermarket or incorrect oil filter causing oil pressure issues that affect the actuator.
  6. Contaminated or degraded engine oil leading to solenoid malfunction.

How to diagnose and fix it

  1. Check the engine oil level and condition; top off or change oil and filter if the oil is dirty or low.
  2. Inspect the bank 2 camshaft position actuator solenoid connector and wiring for damage, corrosion, or loose pins; repair as needed.
  3. Measure the resistance of the actuator solenoid and compare to the manufacturer's specification; replace if out of range.
  4. Use a scan tool to command the actuator and observe if it responds; if not, test the control circuit with a multimeter or oscilloscope for a short to ground or open.
  5. If the circuit tests good, remove the actuator solenoid and check for sludge or debris; clean or replace as necessary.
  6. If all else fails, diagnose the PCM driver circuit or replace the PCM after confirming no other faults.

Oil quality and circuit checks come first

  • A low-voltage code for a camshaft actuator solenoid is often caused by a dirty or stuck solenoid rather than a failed PCM, so cleaning or replacing the solenoid is frequently the fix.
  • Engine oil sludge or low oil pressure can prevent the actuator from moving, causing the solenoid to overheat and set a low-voltage code; always verify oil condition before replacing parts.
  • The bank 2 'A' actuator is typically the intake camshaft actuator on the bank that does not include cylinder 1, but confirm with the service manual for the specific engine.
  • A shorted or open solenoid coil can be intermittent, so wiggle-test the wiring while monitoring the circuit with a multimeter or scan tool.
  • Do not overlook aftermarket oil filters with incorrect bypass valves, as they can cause oil pressure fluctuations that trigger this code.

Can I keep driving with P2092?

You can usually drive the vehicle with this code, but avoid heavy acceleration and high speeds because the variable valve timing may be disabled, reducing performance and fuel economy. Have the fault diagnosed soon to prevent potential engine damage from ignored oil pressure issues.

Tools that help

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Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.

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