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TuningBot DTC Database · v4.37.15

P1256 Diagnostic Trouble Code (3 interpretations)

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

P · PowertrainEngineOBD2
Brand pages:FordVAG

Ford

1 interpretation
P1256
Pedal Correlation PDS1 and HPDS Ford · engine Data confidence 80%

The control module detected a fault associated with the Pedal Correlation PDS1 and HPDS circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by Ford.

VAG

2 interpretations
P1256
Engine coolant temperature (ECT) sensor - open circuit/short to positive VAG · thermal_management Data confidence 62%

The control module detected an interruption (open circuit) in the Engine coolant temperature (ECT) circuit, so the expected electrical continuity was not present. This is the manufacturer-specific definition used by Audi.

Possible causes

  • Wiring open circuit/short to positive
  • ECT sensor
Applies to Audi
P1256
Engine Coolant Temperature Circuit (G62): Open / Short to B+ VAG · thermal_management Data confidence 88%

The control module detected a short circuit to battery voltage in the Engine Coolant Temperature Circuit (G62): Open / circuit. This is the manufacturer-specific definition used by Volkswagen. Volkswagen Group tools also report it as fault code 17664. Documented across Volkswagen Group applications (Audi, SEAT and Škoda included).

Symptoms

  • Difficulties with starting a cold engine
  • RPM at idle is irregular
  • With all engine temperatures seldom idle rpm will vary between 900 - 1000 rpm
  • Bad acceleration during warming up

Possible causes

  • Wiring and/or connections faulty
  • Engine Coolant Temperature Sensor (G62) faulty

Recommended checks

  • Check wiring and connections
  • Check / Replace Engine Coolant Temperature Sensor (G62)
Applies to Volkswagen

Related and nearby codes

How to read P1256

P

Powertrain: engine, transmission and driveline systems.

1

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

256

Specific fault index within the subsystem.

Frequently asked questions about P1256

What does P1256 mean?

Diagnostic Trouble Code (3 interpretations). The control module detected a fault associated with the Pedal Correlation PDS1 and HPDS circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by Ford.

Is P1256 generic or manufacturer-specific?

P1256 is a manufacturer-specific code. In this database it is documented for: Ford, VAG. The same number can mean something different on other brands.

Can TuningBot remove P1256 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

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