Additional heating circuit 1 : Short circuit to earth, short circuit to positive, open circuit or actuator malfunction
PSA · engine
Data confidence72%
The control module detected a short circuit to ground in the Additional heating circuit 1 circuit. Documented for the Bosch EDC16C34 injection ECU (DV6TED4 1.6 HDi) on Peugeot applications; the same PSA control units are also fitted to Citroën models.
Additional heating relay control fault : Open circuit, short circuit to positive, short circuit to earth
PSA · engine
Data confidence72%
The control module detected an interruption (open circuit) in the Additional heating relay control fault circuit. Documented for the Bosch MED 17.4.x engine ECU (EP6 THP family) on Peugeot applications; the same PSA control units are also fitted to Citroën models.
Applies toPeugeotBosch MED 17.4.x engine ECU (EP6 THP family)
P1403
Additional heating relay control fault : Short circuit to earth / Short circuit to positive / Open circuit
PSA · engine
Data confidence72%
The control module detected a short circuit to ground in the Additional heating relay control fault circuit. Documented for the Bosch MEV17.4 engine ECU (EP6 1.6 VTi) on Peugeot applications; the same PSA control units are also fitted to Citroën models.
Control of additional heating 1 : Open circuit or short circuit to positive or short circuit to earth
PSA · engine
Data confidence72%
The control module detected an interruption (open circuit) in the Control of additional heating 1 circuit. 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.
1 additional heating : Electrical faults : Open circuit, short circuit to positive, short circuit to earth
PSA · engine
Data confidence72%
The control module detected an interruption (open circuit) in the 1 additional heating circuit. 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.
Additional heating circuit 1 : Short circuit to earth, short circuit to positive, open circuit or actuator malfunction
PSA · engine
Data confidence72%
The control module detected a short circuit to ground in the Additional heating circuit 1 circuit. 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.
Powertrain: engine, transmission and driveline systems.
1
Manufacturer-defined range: the meaning can differ between brands.
403
Specific fault index within the subsystem.
Frequently asked questions about P1403
What does P1403 mean?
Diagnostic Trouble Code (6 interpretations). The control module detected a short circuit to ground in the Additional heating circuit 1 circuit. Documented for the Bosch EDC16C34 injection ECU (DV6TED4 1.6 HDi) on Peugeot applications; the same PSA control units are also fitted to Citroën models.
Is P1403 generic or manufacturer-specific?
P1403 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 P1403 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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