Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
The car's brain thinks that the pressure in the 6th cylinder is not high enough. Imagine a balloon that isn't filled with enough air. The car needs this pressure to be just right to run smoothly.
This code indicates that the engine control module (ECM) has detected that the pressure in cylinder 6 is below the expected level during operation.
The P03CC code is triggered when the ECM detects that the pressure in cylinder 6 is lower than the specified threshold. This could be due to a variety of reasons, including issues with the fuel injection, compression, or exhaust systems. The ECM uses various sensors to monitor the pressure and performance of each cylinder, and when it detects an anomaly, it sets this code.
• Check Engine Light is on
• Rough idling or engine misfire
• Decreased engine performance
• Faulty fuel injector for cylinder 6
• Low compression in cylinder 6
• Leaking exhaust valve or intake valve in cylinder 6
ECM: Engine Control Module
Compression: The process of compressing the air-fuel mixture in the engine's cylinders
• Use an OBD-II scanner to confirm the code.
• Perform a compression test on cylinder 6.
• Inspect the fuel injector and spark plug for cylinder 6.
• Replace or clean the fuel injector for cylinder 6.
• Repair or replace faulty valves or piston rings.
• Ensure proper sealing of the cylinder head gasket.
• OBD-II scanner
• Compression tester
• Fuel injector cleaner
$150 - $1000 depending on the specific issue
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regular engine maintenance and tune-ups
• Use of quality fuel and oil
• Timely replacement of spark plugs and fuel injectors
Engine Performance
• Avoid driving the vehicle until the issue is diagnosed and repaired.
• Regularly check for engine warning lights and address them promptly.
Check with the vehicle manufacturer for warranty coverage on engine components.
This code has been associated with vehicles experiencing misfires or performance issues related to fuel delivery or compression.
High – This issue can lead to severe engine damage if not addressed promptly.
Driving with this code can lead to increased emissions and potential safety hazards due to engine performance issues.
• Engine at operating temperature
• Vehicle in idle or under load
Cylinder 6 is typically located on the engine block, and its position can vary depending on the engine layout (inline, V6, etc.).
Q: Can I drive with a P03CC code?
A: It's not recommended to drive with this code as it can lead to engine damage.
Q: How can I prevent this code from appearing?
A: Regular maintenance and using high-quality fuel can help prevent this issue.
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Fitment Required · Vehicle-fitment part
Commonly relevant for misfire, ignition-efficiency, and some drivability-related repairs.
Misfire and ignition-related faults commonly involve spark plugs as part of the repair path.
Check the correct plug type, gap, and engine application for your vehicle.
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Fitment Required · Vehicle-fitment part
Relevant when the fault points toward ignition-coil performance or cylinder-specific ignition issues.
Some ignition faults involve coil performance or cylinder-specific coil problems.
Match the coil to your engine and confirm the failed component before ordering.
View options on AmazonThese parts may be related to this fault category, but a code by itself does not confirm exact fitment or guarantee that replacing a part will solve the problem.