Cylinder 6 Contribution/Balance Fault
Engine control module has detected a malfunction in cylinder 6's power contribution.
Heads up: this code wasn't in our hand-written library yet, so DiagCoach AI built this page on the fly. Double-check critical specs against service info before condemning parts.
What it means (plain English)
Inside the engine, each cylinder should contribute equally to the total power. If cylinder 6 is weak or not firing right, it shows up as a problem and the engine computer notes that it isn't working as it should.
What the computer is actually seeing
The engine control module (ECM) monitors the performance of each cylinder based on crankshaft position sensor data. When the contribution from cylinder 6 falls below a specific threshold (like 20% less than average), the code is triggered.
What a healthy reading looks like
Cylinder balance should be within 5-10% of each other for proper operation. If cylinder 6 shows less than 60 psi during a compression test, it may indicate a problem.
Guided diagnostic — the DiagCoach way
Don't just throw parts at it. Walk through these in order — each step tells you whether to keep going or stop and fix what you found.
- 1Check for any other related fault codes in the system. If any other codes are present, address those first.
- 2Inspect wiring and connectors leading to cylinder 6's injector and coil. Look for frays, corrosion, or loose connections. Repair/remove as needed.
- 3Perform a compression test on cylinder 6. Expect around 120 psi or higher. If significantly lower, you may have mechanical issues needing further inspection.
- 4Check the resistance and operation of the fuel injector for cylinder 6. Swap with another cylinder if possible to see if the code follows.
- 5Inspect the spark plug and ignition coil for cylinder 6 for faults. Replace if they show signs of wear or testing outside acceptable ranges (e.g., resistance outside 0.5-2 ohms for coil).
Common causes
- Faulty injector for cylinder 6
- Compression issues (rings, valves) in cylinder 6
- Wiring/connectors to the injector or cylinder 6
- Faulty coil or spark plug for cylinder 6
- ECM calibration issue
Typical repair cost
$$$
Related codes
Frequently asked questions
Can I still drive with this code?
Yes, but performance may be poor and you risk further engine damage if not promptly repaired.
Will this code come back after clearing it?
Yes, if the underlying issue isn’t fixed, the check engine light will come back on.
Why does this code only refer to cylinder 6?
The ECM monitors each cylinder's performance separately and identifies specific issues, which is why it pinpoints cylinder 6.
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