Dirty, clogged or dribbling cylinder 3 fuel injector, for example from dirt or contamination of the injector inlet filter (OBD-Codes.com says lack of fuel to cylinder 3 is the most likely cause). Failed cylinder 3 fuel injector (listed by both sources). Corroded terminals or pushed-out pins in the injector connector (listed by OBD-Codes.com). Wiring problem (listed by RepairPal). Internal engine problem in cylinder 3 (listed by RepairPal). Engine computer (PCM) software that needs updating (listed by RepairPal).

Clean the cylinder 3 fuel injector (OBD-Codes.com describes a pressurized injector-cleaner flush through the fuel rail test port on gasoline engines). Replace the cylinder 3 fuel injector if cleaning doesn't help (RepairPal lists fuel injector replacement as a common repair). Repair the injector connector or wiring. Replace the spark plug if it is worn or fouled on a gasoline engine (RepairPal lists spark plug replacement as a common repair). Update the PCM software, or repair internal engine damage, only after a professional diagnosis or TSB confirms it.

P0269⛽ Fuel injection / cylinder balanceStop and fix promptly

P0269: Cylinder 3 Contribution/Balance (Meaning, Causes, Fixes)

Q: What does P0269 mean?

P0269 means the engine computer has found that cylinder 3 is contributing less power than the other cylinders. OBD-Codes.com says the most likely cause is a lack of fuel from a clogged, dribbling or failed cylinder 3 fuel injector or a bad injector connector, while RepairPal also lists wiring, internal engine failure and an engine computer software update. The engine computer (PCM) watches how much the crankshaft speeds up during each cylinder's power stroke. OBD-Codes.com explains that when a cylinder adds less acceleration than the rest, the PCM sets a contribution/balance code for that cylinder, and P0269 is the one for cylinder 3 (OBD-Codes.com describes it as the number three cylinder in the firing order). OBD-Codes.com says this points to a fuel-related problem in that cylinder, and that a purely electrical injector fault would normally set a separate high or low voltage code for that injector instead. RepairPal describes it more generally: the PCM has detected that cylinder 3 is not contributing enough to keep the engine running properly. The code is generic to OBD-II vehicles, but searches for it often mention Ford Power Stroke diesels and Hyundai and Kia models, and repair steps vary by make and model, so check technical service bulletins (TSBs) for your vehicle.

Q: Can I keep driving with P0269?

Stop and fix promptly. Get it diagnosed soon. RepairPal rates P0269 'Urgent', meaning it can cause severe damage, and OBD-Codes.com says it should be addressed at your earliest convenience to prevent damage. A cylinder that isn't pulling its weight can run rough and lose power. If the check engine light is flashing, the engine shakes badly, or you smell raw fuel or see heavy smoke, keep driving to a minimum and have it checked. Fuel systems run under high pressure, especially on diesels, so don't open fuel lines with the engine running and let the engine cool before working near it.

Reviewed 2026-10-25 · Based on 2 cited source(s)

What P0269 means

The engine computer (PCM) watches how much the crankshaft speeds up during each cylinder's power stroke. OBD-Codes.com explains that when a cylinder adds less acceleration than the rest, the PCM sets a contribution/balance code for that cylinder, and P0269 is the one for cylinder 3 (OBD-Codes.com describes it as the number three cylinder in the firing order). OBD-Codes.com says this points to a fuel-related problem in that cylinder, and that a purely electrical injector fault would normally set a separate high or low voltage code for that injector instead. RepairPal describes it more generally: the PCM has detected that cylinder 3 is not contributing enough to keep the engine running properly. The code is generic to OBD-II vehicles, but searches for it often mention Ford Power Stroke diesels and Hyundai and Kia models, and repair steps vary by make and model, so check technical service bulletins (TSBs) for your vehicle.

Severity: can I keep driving?

Stop and fix promptly

Get it diagnosed soon. RepairPal rates P0269 'Urgent', meaning it can cause severe damage, and OBD-Codes.com says it should be addressed at your earliest convenience to prevent damage. A cylinder that isn't pulling its weight can run rough and lose power. If the check engine light is flashing, the engine shakes badly, or you smell raw fuel or see heavy smoke, keep driving to a minimum and have it checked. Fuel systems run under high pressure, especially on diesels, so don't open fuel lines with the engine running and let the engine cool before working near it.

Common symptoms

Check engine light on
Reduced power and acceleration (listed by OBD-Codes.com; RepairPal lists decreased engine performance)
Rough idle (listed by OBD-Codes.com)
Worse fuel economy (listed by both sources)

Likely causes

Roughly most to least common, based on the sources below. Your vehicle may differ.

Dirty, clogged or dribbling cylinder 3 fuel injector, for example from dirt or contamination of the injector inlet filter (OBD-Codes.com says lack of fuel to cylinder 3 is the most likely cause)
Failed cylinder 3 fuel injector (listed by both sources)
Corroded terminals or pushed-out pins in the injector connector (listed by OBD-Codes.com)
Wiring problem (listed by RepairPal)
Internal engine problem in cylinder 3 (listed by RepairPal)
Engine computer (PCM) software that needs updating (listed by RepairPal)

Diagnostic steps you can do

⚠ Before you start

Work on a cool engine, parked on level ground with the parking brake set. Never work under a car supported only by a jack.

Read all stored codes. Note any cylinder 3 injector circuit codes such as P0203 or misfire codes such as P0303, since they help narrow down the cause.
Look up technical service bulletins for your year, make and model, as OBD-Codes.com recommends.
Inspect the cylinder 3 injector connector and the harness side for corrosion, bent or pushed-out pins. Fix any damage and add dielectric grease before reconnecting.
On a gasoline engine, OBD-Codes.com suggests listening to the injector with a long screwdriver (handle to your ear) while the engine runs. A steady ticking means it is firing; no ticking means no power or a dead injector.
Clear the code and drive. If the rough running and the code come back after the connector checks out, the injector likely needs cleaning or replacement.

Typical fixes

Clean the cylinder 3 fuel injector (OBD-Codes.com describes a pressurized injector-cleaner flush through the fuel rail test port on gasoline engines)
Replace the cylinder 3 fuel injector if cleaning doesn't help (RepairPal lists fuel injector replacement as a common repair)
Repair the injector connector or wiring
Replace the spark plug if it is worn or fouled on a gasoline engine (RepairPal lists spark plug replacement as a common repair)
Update the PCM software, or repair internal engine damage, only after a professional diagnosis or TSB confirms it

Repair costs vary widely by vehicle, region, parts brand and shop, so we don't quote prices. Get a written estimate after diagnosis.

🛠 When to call a pro

OBD-Codes.com notes a power-balance test (pulling one spark plug wire at a time and watching the RPM drop) can find weak cylinders, and says all cylinders should be within 5 percent of each other
OBD-Codes.com says a supply voltage check at the injector should show battery voltage; no voltage means an open circuit between the injector and the fuel pump relay
The sources differ on causes: OBD-Codes.com focuses on the injector and its connector, while RepairPal also lists internal engine failure, wiring and a PCM software update
Diesel engines (such as Ford Power Stroke) have high-pressure injection systems; injector testing and replacement on those is best left to a shop with the right scan tool
The code returns after injector cleaning or replacement, or other cylinders also set contribution/balance codes

Where to buy

Plain search links. Always match parts to your exact year, make, model and engine.

OBD2 scanners on Amazon Parts at Advance Auto Parts catalog at RockAuto

FAQs

Can I drive with P0269?

Only as much as you need to. RepairPal rates it 'Urgent', and OBD-Codes.com says to address it at your earliest convenience to prevent damage. If the engine shakes badly or the check engine light flashes, limit driving and get it checked.

Is P0269 always a bad injector?

No, but it's the most likely cause. OBD-Codes.com says a lack of fuel to cylinder 3, from a clogged, dribbling or failed injector, is the most likely cause. RepairPal also lists wiring, internal engine failure and a PCM software update, so check the connector and test before buying parts.

What's the difference between P0269 and P0203?

P0203 is an electrical fault in the cylinder 3 injector circuit. P0269 means cylinder 3 is making less power than the others, which OBD-Codes.com says usually points to a fuel delivery problem rather than a high or low voltage fault.

Why do searches for P0269 mention Power Stroke diesels, Hyundai and Kia?

Our sources don't give a reason specific to those vehicles; both describe P0269 as a generic code. Search suggestions for P0269 often name the 6.0L, 6.4L and 7.3L Power Stroke as well as Hyundai and Kia, so check for TSBs for your vehicle and have a shop test the injectors (a diesel shop for Power Stroke trucks).

Sources

Last reviewed 2026-10-25. Code definitions and repair steps can vary by manufacturer. Confirm with your vehicle's service information.