Relay control of the electropump of the cold start system : Open circuit
PSA · engine
Data confidence72%
The control module detected an interruption (open circuit) in the Relay control of the electropump of the cold start system circuit. Documented for the Magneti Marelli MM6KP engine ECU (EW7A/EW10A) on Peugeot applications; the same PSA control units are also fitted to Citroën models.
Powertrain: engine, transmission and driveline systems.
3
Manufacturer-defined range: the meaning can differ between brands.
021
Specific fault index within the subsystem.
Frequently asked questions about P3021
What does P3021 mean?
Relay control of the electropump of the cold start system : Open circuit. The control module detected an interruption (open circuit) in the Relay control of the electropump of the cold start system circuit. Documented for the Magneti Marelli MM6KP engine ECU (EW7A/EW10A) on Peugeot applications; the same PSA control units are also fitted to Citroën models.
Is P3021 generic or manufacturer-specific?
P3021 is a manufacturer-specific code. In this database it is documented for: PSA. The same number can mean something different on other brands.
Can TuningBot remove P3021 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.
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