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TuningBot DTC Database · v4.37.15

P12A2 Diagnostic Trouble Code (4 interpretations)

4 manufacturer-specific interpretations across 2 manufacturers in the TuningBot DTC database.

P · PowertrainFuelOBD2
Brand pages:ChevroletPSA

Chevrolet

1 interpretation
P12A2
Fuel pump speed circuit - performance Chevrolet · fuel Data confidence 62%

The control module judged the Fuel pump speed behaviour implausible for the current operating conditions. This is the manufacturer-specific definition used by Chevrolet.

Possible causes

  • Wiring
  • fuel pump flow control module (FPMC)
  • fuel pump flow control module (FPCM) relay

PSA

3 interpretations
P12A2
No. 1 cylinder : Injecteur n'injecte pas assez ou mauvaise compression cylindre PSA · engine Data confidence 72%

The control module detected the fault condition "Injecteur n'injecte pas assez ou mauvaise compression cylindre" for the No. 1 cylinder. Documented for the Continental SID 807 injection ECU (DV6C 1.6 HDi) on Peugeot applications; the same PSA control units are also fitted to Citroën models.

Applies to Peugeot Continental SID 807 injection ECU (DV6C 1.6 HDi)
P12A2
No. 1 cylinder : The injector is not injecting enough or poor cylinder compression PSA · fuel Data confidence 72%

The control module detected the fault condition "The injector is not injecting enough or poor cylinder compression" for the No. 1 cylinder. Documented for the Delphi DCM 3.5 injection ECU (DW10C 2.0 HDi) on Peugeot applications; the same PSA control units are also fitted to Citroën models.

Applies to Peugeot Delphi DCM 3.5 injection ECU (DW10C 2.0 HDi)
P12A2
Correction of injector flow rate cylinder 1 : Injector jammed closed or cylinder problem PSA · fuel Data confidence 72%

The control module detected that the Correction of injector flow rate cylinder 1 is jammed or locked. Documented for the Siemens SID 803 injection ECU (DW10BTED4 2.0 HDi) on Peugeot applications; the same PSA control units are also fitted to Citroën models.

Applies to Peugeot Siemens SID 803 injection ECU (DW10BTED4 2.0 HDi)

Related and nearby codes

P12 range
P1200P1201P1202P1203P1204P1205P1206P1207P1208P1209P120AP120CP1210P1211P1212P1213P1214P1215

How to read P12A2

P

Powertrain: engine, transmission and driveline systems.

1

Manufacturer-defined range: the meaning can differ between brands.

2A2

Specific fault index within the subsystem.

Frequently asked questions about P12A2

What does P12A2 mean?

Diagnostic Trouble Code (4 interpretations). The control module judged the Fuel pump speed behaviour implausible for the current operating conditions. This is the manufacturer-specific definition used by Chevrolet.

Is P12A2 generic or manufacturer-specific?

P12A2 is a manufacturer-specific code. In this database it is documented for: Chevrolet, PSA. The same number can mean something different on other brands.

Can TuningBot remove P12A2 at file level?

If the fault logic lives in the ECU calibration, yes: our DTC Removal file service disables the specific fault entry. Checksum correction is not included: it is a separate, optional service. Not sure whether your case qualifies? Request a free assessment and our engineers will check your ECU file.

Other file services

Stage 1/2/3 TuningDPF RemovalEGR RemovalAdBlue / SCR RemovalDTC RemovalIMMO OFFSpeed Limiter (Vmax)

Understand the system behind this code: Diagnostic Strategy and DTC Logic

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