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OBD-II Code

P0269

Severity

Not yet reviewed

Nobody on our side has assessed this code yet, so we are not going to guess at how serious it is.

Can you drive it

We cannot say

Treat it as unknown until a shop reads it with live data. If the check-engine light is FLASHING, stop driving as soon as it is safe to — that means an active misfire, whatever the code.

Indicative cost (USD)

$400–$7,500

From this code's diagnostic notes. Varies by vehicle, diagnosis, parts, and local labor. This is not a repair quote.

P0269 means the ECM detected cylinder 3 contribution/balance fault — identical diagnostic logic to P0263/P0266 but for cylinder 3.

How a shop works this

Work from evidence to part, not the other way round. A code names a circuit or a symptom; it does not name the part that failed.

  1. Note every code that is set, not just this one.

    Codes that appear together usually narrow the cause faster than any one of them read alone.

  2. Read the freeze frame — the conditions the fault was recorded under.

    Cold or warm, idle or load, road speed and engine speed. A fault that only appears cold is a different fault from one that only appears under load, even with the same code on the scanner.

  3. Confirm the fault is current rather than history.

    Clear the code and see whether it returns under those same conditions. A code that does not come back may have been logged during a repair, a flat battery, or a bad connection that has since been disturbed.

  4. Then follow the diagnostic notes further down this page, in the order they are written.

    They are written in the order a shop works this code, cheapest checks first. Where they name a component, inspect its wiring and connector before replacing it.

If the code comes back after a repair, the underlying fault is still there. That is the point to bring in a scanner with live data and freeze-frame, or a shop that has one.

Common symptoms

  • Check engine light
Read the full diagnostic procedureP0269 means the ECM detected cylinder 3 contribution/balance fault — identical diagnostic logic to P0263/P0266 but for cylinder 3.

P0269 means the ECM detected cylinder 3 contribution/balance fault — identical diagnostic logic to P0263/P0266 but for cylinder 3. The ECM monitors crankshaft acceleration per cylinder firing and per-cylinder injector balance rate (typically expressed as mm^3/stroke deviation from the bank nominal), and sets the code when cylinder 3's contribution falls outside roughly +/-8 to 15% of bank average or its balance rate exceeds 2-5 mm^3/stroke deviation.

The shop-floor diagnostic flow on cylinder 3 is identical to any cylinder-balance code

  1. live-data the per-cylinder balance rates and identify the magnitude and sign of the deviation.
  2. Swap the cylinder 3 injector connector with an adjacent same-bank cylinder, clear, and confirm whether the fault follows the electrical path — this distinguishes injector/wiring from mechanical compression.
  3. Return-flow test all injectors with calibrated bottles to confirm whether cylinder 3's injector is over-returning (stuck/dribbling) or normal.
  4. Relative compression test via scan-tool starter-current monitoring — looking for less than 15% deviation between cylinders, with anything beyond pointing at compression.
  5. Confirm injector trim/IQA codes in the ECM match the etched codes on the actual injectors — this catches the 'someone replaced an injector but didn't recode it' fault that throws balance codes immediately. Critical caveat on cylinder identification: on an inline-6 (Cummins, BMW, Mercedes OM613/648) cylinder 3 is the middle cylinder and historically the one with the most thermal stress; on a V8 the bank assignment for cylinder 3 varies sharply — Ford modular 5.4L vs. GM LS vs. Chrysler Hemi all assign cylinder 3 differently — pull the FSM diagram. Expensive-misdiagnosis caveat: a single cylinder-balance code on a high-mileage diesel is almost always the first of many — replacing only the cylinder 3 injector is rarely the right financial call once you've already broken into the fuel system.
Vehicle-specific patterns2001-2004 GM Duramax LB7 throws P0269 as part of the well-documented full-set injector failure pattern — under-the-valve-cover injectors fail togethe…
  • 2001-2004GM Duramax LB7 throws P0269 as part of the well-documented full-set injector failure pattern — under-the-valve-cover injectors fail together.
  • 2003-2007Ford 6.0L Powerstroke throws P0269 from HEUI stiction or low HPOP output; if all 8 cylinders show balance codes simultaneously it's typically a hydraulic problem (HPOP, IPR, branch tube leak) not an injector problem.
  • 2008-2010Ford 6.4L Powerstroke throws P0269 from piezo injector wear or from a failed injection control pressure (ICP) sensor mimicking injector starvation.
  • 2011-2016Ford 6.7L Powerstroke throws P0269 after CP4 contamination events.
  • 2003-2018RAM Cummins 5.9L/6.7L throws P0269 from Bosch CR injector wear — the middle cylinder on the inline-6 commonly shows balance drift first.
  • 2007-2018Mercedes Sprinter OM642 throws P0269 from piezo injector wear; trim-code matching after replacement is critical.
  • 2009-2014Audi/VW TDI 2.0L CR (CBEA/CJAA) throws P0269 from injector nozzle wear and post-CP4-grenade contamination.

Estimated repair$400 to $7,500.

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