P0264 — Cylinder 1 Contribution/Balance Fault
Drivable short-term, but fix now to avoid damage.
What P0264 means
This code means the engine computer sees cylinder 1 producing less power than the other cylinders, a balance or contribution fault. It usually points to a weak or clogged fuel injector, low compression, a fuel delivery issue, or a mechanical problem in that cylinder. Repairs depend on the cause and commonly involve testing the injector, compression, and fuel delivery before replacing the faulty part.
Common symptoms
- Check engine light is on
- Rough idle and engine vibration
- Weak or uneven acceleration
- Engine feels down on power
- Possible misfire feel on cylinder 1
Common causes
- Weak, clogged, or failing cylinder 1 fuel injector
- Low compression in cylinder 1
- Fuel delivery problem to that cylinder
- Injector wiring or connector fault
- Mechanical issue such as a leaking valve or worn rings
Typical repair cost
$150 – $1200
Varies by vehicle and root cause.
Frequently asked questions
Can I keep driving with a P0264 code?
Short distances are usually fine, but don't rely on it. A weak cylinder often means a misfire that can damage the catalytic converter over time. Get it diagnosed soon, and if the engine is vibrating heavily or losing significant power, avoid driving until repaired.
How much does it cost to fix a P0264 code?
If it's a fuel injector or wiring, repairs often range from $150 to $600. If the cause is low compression or a mechanical issue in the cylinder, costs can climb toward $1,200 or more. Diagnosis is key since the price depends heavily on the root cause.
Is a P0264 code serious?
Yes, it's fairly serious because cylinder 1 isn't pulling its weight, which can stem from a misfire or even a mechanical problem. Continued driving risks catalytic converter damage and worse engine issues. It deserves prompt attention.
What does 'contribution/balance fault' mean for P0264?
It means the computer compares how much each cylinder contributes and found cylinder 1 lagging behind the others. That imbalance usually traces to a weak injector, low compression, or a fuel delivery problem in that cylinder. A technician runs balance and compression tests to find the exact cause.