What Does P2662 Mean?
The PCM has detected the Bank 2 'B' rocker arm actuator is stuck in the engaged position and will not disengage when commanded. This indicates a mechanical failure preventing the actuator from returning to its default state.
Common Causes
35%
Mechanically stuck rocker arm actuator with seized locking pin or mechanism
25%
Sludge or debris preventing actuator disengagement
20%
Failed actuator solenoid stuck in open position maintaining oil pressure
12%
Broken or weak actuator return spring
8%
Contaminated engine oil causing varnish buildup in actuator
Diagnostic Steps
1
Step 1: Check engine oil level and condition; contaminated or incorrect viscosity oil can cause actuator sticking
2
Step 2: Monitor live data for actuator position sensor while commanding actuator off; verify sensor shows engaged position
3
Step 3: Remove valve cover and manually attempt to disengage actuator mechanism; note any binding or resistance
4
Step 4: Inspect actuator solenoid operation by measuring voltage drop across solenoid when commanded off (should be near battery voltage)
5
Step 5: Remove and disassemble actuator assembly to inspect locking pins, springs, and oil passages for wear, damage, or debris
Estimated Repair Cost
$350 - $1,400
Parts + labor, varies by vehicle and location
The PCM has detected the Bank 2 'B' rocker arm actuator is stuck in the engaged position and will not disengage when commanded. This indicates a mechanical failure preventing the actuator from returning to its default state.
The most common cause of P2662 (B Rocker Arm Actuator System Stuck On Bank 2) is: Mechanically stuck rocker arm actuator with seized locking pin or mechanism
Typical repair costs for P2662 range from $350 to $1,400, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Safe to drive but may experience continuous high-lift cam operation causing poor idle quality, increased fuel consumption, and potential engine damage if driven extensively in this condition.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P2662 to identify the root cause.
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Quick Info
Category
Powertrain
System
Variable Valve Timing / Cylinder Deactivation System
Difficulty
Type
Generic (SAE)
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