Fault Code P2646
Code meaning, symptoms, possible causes, part number, and estimated cost.
P2646
A Rocker Arm Actuator Control Circuit Low Bank 1
An abnormally low electrical signal in the control circuit of the Rocker Arm Actuator on Bank 1. This fault affects the Variable Valve Timing (VVT/VTEC) system, impairing engine efficiency and performance.
Part Details
Part Name
Rocker Arm Actuator
Reference P/N (OEM)
N/A
General part number for this fault code — not necessarily for your specific vehicle
Estimated Cost
₪600 - ₪1,800
Engine Location
Cylinder Head
Symptoms
- Check Engine Light on
- Poor engine performance
- Increased fuel consumption
- Unusual engine noises
Possible Causes
- 1Damaged wiring or short in the circuit
- 2Faulty rocker arm actuator
- 3Engine Control Module (ECM) malfunction
- 4Low engine oil pressure
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