Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that the car's computer detected that there is too much fuel in the exhaust gases when some of the engine's cylinders are turned off to save fuel, specifically on the side of the engine called Bank 2.
The engine control module (ECM) has detected a rich condition (too much fuel) in the exhaust gases during cylinder deactivation on Bank 2.
During cylinder deactivation, the engine control module (ECM) shuts off fuel to certain cylinders to improve fuel efficiency. If the ECM detects a rich condition, meaning there is more fuel than air in the exhaust gases from Bank 2, it triggers the P2E6B code. This can be due to various reasons such as a malfunctioning fuel injector or an issue with the deactivation system.
• Check Engine Light is on
• Reduced fuel efficiency
• Rough engine idle
• Faulty fuel injector
• Leaking fuel pressure regulator
• Malfunctioning cylinder deactivation solenoid
ECM: Engine Control Module
Bank 2: The side of the engine opposite the number one cylinder
Rich Condition: When there is too much fuel in the air-fuel mixture
• Use an OBD-II scanner to confirm the code.
• Inspect fuel injectors for leaks.
• Check the operation of the cylinder deactivation solenoids.
• Replace faulty fuel injectors.
• Repair or replace leaking fuel pressure regulator.
• Replace malfunctioning cylinder deactivation solenoid.
• OBD-II scanner
• Fuel pressure gauge
• Multimeter
$200 - $600
Moderate
• Chevrolet Silverado
• GMC Sierra
• Cadillac Escalade
• Regular maintenance of fuel system.
• Use high-quality fuel.
• Routine inspection of engine components.
Engine Performance
• Avoid heavy acceleration until repaired.
• Monitor fuel efficiency.
• Schedule a service appointment.
Check with your vehicle manufacturer for warranty coverage on engine components.
Cylinder deactivation systems have been used to improve fuel efficiency, but they can sometimes cause issues like rich conditions if not functioning properly.
Moderate – It should be addressed soon to avoid potential damage to the catalytic converter.
Ignoring this code may lead to increased emissions and potential damage to the catalytic converter.
• Engine at operating temperature
• Vehicle in closed-loop operation
Cylinder deactivation solenoids and fuel injectors are located on the engine, with Bank 2 typically being the side of the engine opposite the number one cylinder.
Q: Can I drive with a P2E6B code?
A: It's possible to drive short distances, but it's best to get it fixed soon to prevent further damage.
Q: What happens if I ignore the P2E6B code?
A: Ignoring the code can lead to poor fuel efficiency and potential damage to the catalytic converter.
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