What Does P2658 Mean?
The PCM has detected an abnormally low voltage in the control circuit for the Bank 2 rocker arm actuator. This indicates a short to ground or open circuit preventing proper actuator operation.
Common Causes
35%
Shorted to ground wiring or damaged insulation in actuator circuit
30%
Failed rocker arm actuator solenoid with internal short
20%
Corroded or damaged actuator connector causing short or open
10%
Failed PCM driver circuit for actuator control
5%
Broken or loose ground connection in actuator circuit
Diagnostic Steps
1
Step 1: Disconnect actuator connector and measure resistance of actuator solenoid; should be 6-12 ohms typically
2
Step 2: Check for continuity between actuator control wire and ground with connector disconnected
3
Step 3: Inspect wiring harness for pinched, chafed, or damaged wires along entire run
4
Step 4: Measure voltage at PCM connector on actuator control pin with actuator disconnected; should show battery voltage when commanded on
5
Step 5: Test PCM by substituting known-good actuator and harness if available
Estimated Repair Cost
$150 - $700
Parts + labor, varies by vehicle and location
The PCM has detected an abnormally low voltage in the control circuit for the Bank 2 rocker arm actuator. This indicates a short to ground or open circuit preventing proper actuator operation.
The most common cause of P2658 (A Rocker Arm Actuator Control Circuit Low Bank 2) is: Shorted to ground wiring or damaged insulation in actuator circuit
Typical repair costs for P2658 range from $150 to $700, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Vehicle is safe to drive but will operate without variable valve timing benefits. May experience reduced power and fuel economy.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P2658 to identify the root cause.
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Quick Info
Category
Powertrain
System
Variable Valve Timing/Cylinder Deactivation System
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
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