Error code

OBD2 P2656

OBD2P2656
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.

What it means

'A' Rocker Arm Actuator System Performance or Stuck Off.

Severity

moderateCan be driven but performance issues may occur.

Summary

P2656 indicates an issue with the rocker arm actuator system performance or being stuck in the off position on bank 2 of V-type engines.

Symptoms

  • Illuminated MIL (CHECK ENGINE) lamp
  • Fluctuating idle speed, rough idling, or engine not idling at all
  • Reduced engine performance and power loss above or below certain speeds
  • Decreased fuel economy
  • Increased emissions

Common Causes

  • Dirty, degraded, contaminated, or unsuitable oil
  • Low oil levels
  • Faulty VVT actuator
  • Defective VVT actuator position switch
  • Damaged wiring and electrical connectors in the control circuit
  • Mechanical failure of the affected VVT oil control solenoid

Diagnosis

  1. Check and replace engine oil if necessary.
  2. Inspect wiring and connectors for damage or corrosion.
  3. Test VVT actuator position switch and solenoid for proper operation.

Fixes

  • Replace faulty rocker arm actuator or related components as needed.

FAQ

What does P2656 mean?

P2656 indicates a problem with the VVT oil control solenoid on bank 2, which could be due to dirty oil or mechanical failure.

How do I fix P2656?

Fixing P2656 involves checking and replacing engine oil, inspecting wiring and connectors, and testing the VVT actuator position switch and solenoid.

View source

Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.

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