A2C59511612 — Technical Research
Continental (Siemens VDO) solenoid common-rail injector for the PSA 1.4 HDi (DV4) engine, shared with Ford 1.4 TDCi, Mazda 1.4 MZ-CD and Toyota 1.4 D-4D. PSA OE 9663429280 / 1980L0; Ford 2S6Q-9F593-BE (FINIS 1805488). Failures are driven by poor fuel filtration, contamination and back-leakage; follow the diagnostic for the specific ECU when fitting. Key symptoms: Rough idle / vibration; Hard starting; Loss of power / limp mode; Black smoke. Common failure modes: Internal wear / high back-leakage; Water-in-fuel corrosion; Nozzle coking.
Continental/Siemens VDO A2C59511612 1.4 HDi/TDCi (DV4) Common Rail Injector (Peugeot/Citroen/Ford/Mazda/Toyota)
Continental (Siemens VDO) solenoid common-rail injector for the PSA 1.4 HDi (DV4) engine, shared with Ford 1.4 TDCi, Mazda 1.4 MZ-CD and Toyota 1.4 D-4D. PSA OE 9663429280 / 1980L0; Ford 2S6Q-9F593-BE (FINIS 1805488). Failures are driven by poor fuel filtration, contamination and back-leakage; follow the diagnostic for the specific ECU when fitting. Key symptoms: Rough idle / vibration; Hard starting; Loss of power / limp mode; Black smoke. Common failure modes: Internal wear / high back-leakage; Water-in-fuel corrosion; Nozzle coking.
A leaking injector unbalances cylinder fuelling on the 1.4 HDi DV4.
Excess back-leakage drops cranking rail pressure.
Out-of-range delivery or rail-pressure deviation cuts power.
Poor atomisation over-fuels the cylinder.
Cylinder-specific injector or fuel-metering codes.
- InstallationFollow the diagnostic for the specific ECU; later DV4 fitments use an injector classification code while early 8HX/8HZ units may not - verify before road test.
- InstallationRenew the copper combustion washer and leak-off seals; torque the clamp to spec.
- MisdiagnosisRead live back-leakage data to find the weak cylinder before removal - the small 1.4 is sensitive to a single failing unit.
- WarningFix contamination (filter/water/debris) first - the DV4 is sensitive to fuel quality.
- TestingBench-test across delivery and back-leakage points; verify spray pattern before refit.
What is injector A2C59511612?+
A Continental (Siemens VDO) solenoid common-rail diesel injector for the PSA 1.4 HDi (DV4) engine, shared with Ford 1.4 TDCi, Mazda 1.4 MZ-CD and Toyota 1.4 D-4D. PSA OE 9663429280.
Which vehicles use A2C59511612?+
Citroen C2/C3, Peugeot 1007/107/206/207 1.4 HDi, Ford Fiesta/Fusion 1.4 TDCi, Mazda 2 1.4 MZ-CD and Toyota Aygo 1.4 D-4D.
Is it solenoid or piezo?+
It is a Continental/Siemens VDO solenoid common-rail injector.
Does A2C59511612 need coding?+
It depends on the ECU - later DV4 fitments use an injector classification code while early 8HX/8HZ units may not. Verify with PSA Lexia / Ford IDS when fitting.
What are the OE part numbers?+
PSA 9663429280 and 1980L0, and Ford 2S6Q-9F593-BE (FINIS 1805488) reference this injector.
Does it fit the Toyota Aygo and Mazda 2 diesel?+
Yes - the Aygo 1.4 D-4D and Mazda 2 1.4 MZ-CD use the PSA DV4 engine and the same Continental injector.
What are the symptoms of failure?+
Rough idle, vibration, hard starting, black smoke, power loss/limp mode and an EML.
Why does my 1.4 HDi run rough?+
A worn or leaking injector unbalances fuelling; read live back-leakage data and bench-test the suspect cylinder.
What causes these injectors to fail?+
Poor fuel filtration, contamination and back-leakage wear - fix the cause first.
Does a remanufactured A2C59511612 perform like new?+
A properly remanufactured injector is bench-tested and recalibrated on a Continental-capable tester, then coded where the ECU requires it.