Cylinder 3 Contribution/Balance Fault
The P0269 code means the vehicle's onboard diagnostic system has detected: Cylinder 3 Contribution/Balance Fault. This is a moderate severity code.
- Keep driving?
- Short distances only
- DIY difficulty
- hard
- Estimated cost
- $150 - $1,200 (parts and labor)
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Common Symptoms
- Engine misfire on cylinder 3
- Rough idle and vibration
- Check Engine Light illuminated
- Uneven power delivery
- Engine stumbles under load
Probable Causes (Ranked by Likelihood)
- Faulty cylinder 3 fuel injector (incorrect fuel delivery) Very High
- Low compression in cylinder 3 High
- Leaking or clogged injector on cylinder 3 High
- Vacuum leak at cylinder 3 intake runner Moderate
- Worn camshaft lobe affecting cylinder 3 valves Low
Common Fixes by Vehicle
What techs usually find when diagnosing P0269 on specific vehicles — tap your vehicle for the fix and the exact part:
1999-2016 Ford F-250/F-350 6.8L V10 Moderate DIY
Cylinder 5 contribution fault — on the 6.8L V10 this typically indicates a failed coil-on-plug or a fouled spark plug (common after 80K miles). Swap coil with another cylinder; if fault follows, replace coil. Replace all 10 plugs at the same time with Motorcraft units.
Labor: 1-3 hr2003-2013 Dodge Ram/Charger 5.7L Hemi Easy (coil), Advanced (cam) DIY
Cylinder 5 contribution low on Hemi — likely a dropped valve seat or stuck lifter (5.7L Hemi lifter/cam wear is a known issue). Perform compression test cylinder 5 first. If low, cam/lifter replacement required. If compression good, replace both coils at cylinder 5.
Labor: 1 hr (coil), 12-20 hr (cam)2005-2010 Ford F-150/Expedition 5.4L 3V Easy (coil), Advanced (phasers) DIY
Cylinder 5 contribution fault — 5.4L 3V is plagued by cam phaser rattle and variable cam timing issues causing cylinder-specific misfires. Inspect the plug/coil first, then address timing components if the truck has over 120K miles.
Labor: 1 hr (coil), 10-14 hr (phasers)Frequently Asked Questions
Can I drive with code P0269?
You can drive short distances with light loads. Cylinder 3 is producing less power than expected, and heavy loads will strain the remaining cylinders.
How does the PCM detect a contribution fault?
The PCM measures crankshaft acceleration during each cylinder's power stroke. If cylinder 3 produces noticeably less acceleration than the others, the PCM logs a contribution fault.
Can low compression be fixed without an engine rebuild?
It depends on the cause. A burnt valve can be repaired with a valve job. Worn piston rings typically require an engine rebuild or replacement.
Mechanics Guide Step-by-step diagnosis
Step-by-Step Diagnostic Procedure
-
Perform a cylinder contribution test using a scan tool to compare power output per cylinder
-
Run a compression test -- cylinder 3 should be within 10% of the highest reading
-
Swap cylinder 3 injector with another cylinder to determine if the injector is the cause
-
Check for vacuum leaks at cylinder 3 intake using a smoke machine
-
If compression is low, perform a leak-down test to identify valves, rings, or head gasket failure
Sources 2
This page is built from documented references. Verify against your own service info before repair work.
- SAE J2012Diagnostic Trouble Code Definitions (defines the generic OBD-II code ranges)
- Cross-checked against the SAE J2012:2002 DTC table (2026-08-27)archived scan of the SAE standard — readable copy, not SAE’s current edition
P0269 on Diesel, EV & Equipment
The same code ID appears across other engines and platforms. The diagnostic flow varies by manufacturer — these are the platform-specific breakdowns:
Commonly Affected Vehicles
- 2007-2017 Volkswagen Passat TDI
- 2008-2018 Ford F-350 Diesel
- 2010-2019 Chevrolet Silverado Duramax
- 2006-2016 Dodge Ram Cummins
- 2009-2018 BMW X5 Diesel
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