P0269 Cylinder 3 Contribution/Balance — Causes & Fix
Updated for 2026 diagnostics & repair guidance
P0269 at a Glance
What it means
The ECU has detected that cylinder 3 is contributing less power than the other cylinders.
Most common cause
Worn or failing cylinder 3 injector, causing uneven fuel delivery.
Severity
Moderate — driveable but causes rough running and increased emissions.
Can you drive?
Yes, but performance is reduced. Address within 1–2 weeks.
Typical repair cost
£100–£350 for injector replacement.
What Does P0269 Mean?
P0269 indicates the ECU has detected a power imbalance in cylinder 3. The ECU monitors crankshaft acceleration after each cylinder fires — when cylinder 3 contributes noticeably less torque, P0269 is stored. On 4-cylinder engines, cylinder 3 is particularly prone to thermal stress as it's in the centre of the block with less cooling airflow, which can accelerate injector wear.
Common Causes
Injector-Related Causes
Worn cylinder 3 injector nozzle
Heat and mileage cause the nozzle to wear, altering spray pattern and reducing combustion efficiency.
Injector drift (calibration loss)
The cylinder 3 injector's delivery has drifted outside the ECU's trim range, causing a measurable power deficit.
Carbon deposits on injector tip
Cylinder 3's central position means higher heat soak, accelerating carbon build-up on the nozzle.
Other Possible Causes
Low compression in cylinder 3
Worn piston rings or valves reduce compression, preventing proper combustion.
Glow plug failure (cylinder 3)
A failed glow plug causes cold-start contribution faults that may persist as a stored code.
Symptoms Drivers Notice
- Rough, uneven idle
- Vibration through the vehicle at standstill
- Slight power loss during acceleration
- Marginally higher fuel consumption
- Engine management light on
- Occasional smoke puff on acceleration
Vehicles Commonly Affected
Can You Still Drive with P0269?
Yes — P0269 is driveable. Expect rough idle and slightly reduced power. Address within 1–2 weeks. If the engine becomes very rough or heavy smoke appears, have it checked sooner to prevent DPF contamination.
How Mechanics Diagnose P0269
- 1
Read cylinder contribution values
Check live balance data — cylinder 3 will show a negative deviation (e.g., -15% or worse).
- 2
Perform injector leak-off test
Measure fuel return from the cylinder 3 injector. Elevated return confirms injector wear.
- 3
Swap injectors between cylinders
Swap cylinder 3 injector with another. If the fault moves, the injector is confirmed faulty.
- 4
Check injector coding
Verify the IMA/QR code for cylinder 3 is correctly programmed. Mis-coding causes balance faults.
- 5
Compression test
If the injector is fine, test compression to rule out mechanical wear in cylinder 3.
Repair Solutions & Costs
Replace cylinder 3 injector
A remanufactured OEM-spec injector restores correct fuel delivery and cylinder balance.
Injector cleaning
Professional ultrasonic cleaning can restore performance if carbon build-up is the sole cause.
Re-code injector
If the physical injector is fine but incorrectly coded, reprogramming resolves the fault.
Replace glow plug (cylinder 3)
If the glow plug is failed, replacement fixes cold-start contribution faults.
Replacing injectors? Browse our remanufactured diesel injectors, reconditioned injectors or refurbished diesel injectors — all bench-tested with a 12-month warranty.
When Injector Replacement Is Required
Replacement is needed when the leak-off test shows elevated return, cylinder contribution deviation exceeds 15%, or the injector has over 100,000 miles.
Compatible Remanufactured Injectors
OEM bench-tested injectors for engines affected by P0269 — verified pricing, 12-month warranty, free UK delivery.
Bosch 0445110375
Remanufactured Bosch 0445110375 diesel injector for Renault, Nissan and Vauxhall 2.0 dCi (M9R) and 2.3 dCi (M9T) applications. Direct replacement for Renault Trafic, Master, Nissan Primastar, NV400 and Vauxhall Vivaro, Movano. Cross-references 0445110634, 0986435205, 0986435234, 166005070R, 8200912052 and 93168212. Not interchangeable with Continental/Siemens M9T variants or newer Euro 6 Bosch injectors. OEM-tested and calibrated with full flow and leak-back verification on CR318 PRO test bench. Includes 12-month unlimited-mileage warranty. Supplied as an exchange unit — return your old injector within 30 days.
Fits: M9R630, M9R692, M9T670, M9T672
View injector
Siemens VDO / Continental 562002010
Renault / Nissan 2.3 dCi (M9T) Remanufactured Common Rail Injector
Fits: M9T700, M9T702, M9T704, M9T706
View injector
Siemens VDO / Continental A2C59511612
1.4L HDi/TDCi Remanufactured Common Rail Injector (PSA DV4 — Peugeot/Citroen/Ford/Mazda/Toyota)
Fits: 2WZTV, 8HT, 8HX, 8HZ
View injector
Siemens VDO / Continental 562001910
Renault / Nissan / Vauxhall 2.3 dCi (M9T) Remanufactured Common Rail Injector
Fits: M9T678, M9T680, M9T686, M9T694
View injector
Siemens VDO / Continental A2C59511316
Jaguar / Land Rover / PSA 2.7 TDV6 (DT17) Remanufactured Common Rail Injector
Fits: 276DT, AJD, AJTDV6, DT17BTED4
View injector
Bosch 0445110083
Remanufactured Bosch 0445110083 (exchange 0986435078) common-rail diesel injector for the first-generation 1.3 MultiJet / CDTi / DDiS engine, Euro 3 (188A9.000 / Z13DT / Y13DT). Fits Fiat Punto II (188) 1.3 JTD 16V and Panda (169) / Idea 1.3 MultiJet 2003–2005, Lancia Ypsilon / Musa 1.3 MJT 2003–2005, Opel/Vauxhall Corsa C, Agila A, Combo C, Meriva A and Tigra B 1.3 CDTI 2003–2006, and Suzuki Ignis / Wagon R+ 1.3 DDiS 2003–2006. Note: later Euro 4/5 1.3 engines (Z13DTJ/Z13DTH/199A2 → 0445110183; 169A1/199A3/263A2 → 0445110351; A13DTC → 0445110326) use different injector families. Fully tested and calibrated to OEM specification with 12 months warranty.
Fits: 188A9.000, Y13DT, Z13DT
View injector
Bosch 0445110183
Remanufactured Bosch 0445110183 CRI2-16 common-rail diesel injector for early-generation 1.3 CDTi / 1.3 D Multijet engines (Z13DTJ, Z13DTH, 199 A2.000 — OE 55197875 / 93190435 / Bosch exchange 0986435102). Fits Vauxhall/Opel Corsa D, Astra H, Agila B, Meriva A and Combo C, plus Fiat Grande Punto, 500, Panda and Doblo and Ford Ka II up to 2010. Fully tested and calibrated to OEM specification with 12 months warranty.
Fits: 199A2.000, Z13DTH, Z13DTJ
View injector
Bosch 0445110326
Remanufactured Bosch 0445110326 diesel injector for Opel/Vauxhall 1.3 CDTi and Fiat 1.3 Multijet applications. Direct replacement for Vauxhall Corsa, Astra, Meriva, Combo, Fiat Punto, Doblo, Alfa Romeo MiTo and Suzuki Swift with A13DTC/A13DTE engine. Cross-references 0986435200, 55214159, 55564218, 55566498, 93195389. OEM-tested and calibrated with full flow and leak-back verification on CR318 PRO test bench. Includes 12-month unlimited-mileage warranty. Supplied as an exchange unit — return your old injector within 30 days.
Fits: A13DTC, A13DTE, A13DTR
View injectorCompatible Injector Part Numbers
3 injectors compatible with engines affected by P0269.
Cross Reference Numbers
OEM and alternative part numbers for injectors affected by P0269.
Affected Vehicle & Engine Combinations
Trusted Injector Families for These Engines
Verified remanufactured injector families fitted to engines documented to log P0269.
0445110375
Bosch · 2.0L / 2.3L dCi
Engines: M9R630, M9R692, M9T670, M9T672, M9T676, M9T690
562002010
Siemens VDO / Continental · Renault / Nissan 2.3 dCi (M9T)
Engines: M9T700, M9T702, M9T704, M9T706, M9T710, M9T716
A2C59511612
Siemens VDO / Continental · 1.4L HDi/TDCi
Engines: 2WZTV, 8HT, 8HX, 8HZ, DV4C, DV4TD
562001910
Siemens VDO / Continental · Renault / Nissan / Vauxhall 2.3 dCi (M9T)
Engines: M9T678, M9T680, M9T686, M9T694, M9T696, M9T698
A2C59511316
Siemens VDO / Continental · Jaguar / Land Rover / PSA 2.7 TDV6 (DT17)
Engines: 276DT, AJD, AJTDV6, DT17BTED4, DT17ED4, UHZ
0445110083
Bosch · 1.3L
Engines: 188A9.000, Y13DT, Z13DT
Need a Replacement Injector?
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Fault Codes
Symptoms
Why It Happens
Common-rail injectors live at extreme pressures with clearances measured in microns. Fuel quality, heat cycles and mileage wear the internal control valve and nozzle: back-leak rises, spray patterns deteriorate and delivery drifts from calibration. Most 'engine' complaints on high-mileage diesels trace back to this gradual injector wear.
Professional Diagnosis
Workshops follow a fixed order: scan for codes and freeze-frame data, compare requested vs actual rail pressure on live data, read cylinder balance corrections, then run a comparative leak-off test. That sequence identifies the faulty injector without guesswork — and prevents needlessly replacing pumps, sensors or the wrong injector.
Typical Workshop Findings
The most frequent findings are: one injector returning several times the leak-off volume of its neighbours; carbon build-up from a failed copper washer; corroded injector connectors; and missing injector coding after a previous repair. Genuine high-pressure pump failures are rarer than back-leak faults that mimic them.
When to Replace Injectors
Replace when testing proves internal wear: leak-off clearly above the other injectors, balance corrections at their limits, or a failed bench test. Cleaning and additives cannot restore worn internal clearances. Bench-tested remanufactured injectors restore original calibration at a fraction of the new price — always coded to the ECU where the engine requires it.
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