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TuningBot DTC Database · v4.37.14

P1857 Diagnostic Trouble Code (4 interpretations)

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

P · PowertrainEngineOBD2
Brand pages:FordMitsubishiVAG

Ford

1 interpretation
P1857
Transmission Transfer Case Contact Plate 'C' Short Circuit To Ground Ford · engine Data confidence 62%

The control module detected a short circuit to ground in the Transmission Transfer Case Contact Plate 'C' circuit. This is the manufacturer-specific definition used by Ford.

Mitsubishi

1 interpretation
P1857
Odd Number Gear Axle Interlock Mitsubishi · engine Data confidence 62%

The control module detected a fault associated with the Odd Number Gear Axle Interlock circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by Mitsubishi.

VAG

2 interpretations
P1857
Load Signal Error Message From ECU VAG · engine Data confidence 62%

The control module registered the fault condition described as "Load Signal Error Message From ECU". This is the manufacturer-specific definition used by Audi.

Possible causes

  • Vacuum leak
  • intake system - air leak
Applies to Audi
P1857
Load Signal: Error Message from ECU VAG · engine Data confidence 88%

The control module registered the fault condition described as "Load Signal: Error Message from ECU". This is the manufacturer-specific definition used by Volkswagen. Volkswagen Group tools also report it as fault code 18265. Documented across Volkswagen Group applications (Audi, SEAT and Škoda included).

Symptoms

Malfunction Indicator Light (MIL) active

Possible causes

Fault Code(s) stored in Engine Control Unit (ECU)

Recommended checks

Check Engine Control Unit for Fault Code(s)

Applies to Volkswagen

Related and nearby codes

How to read P1857

P

Powertrain: engine, transmission and driveline systems.

1

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

857

Specific fault index within the subsystem.

Frequently asked questions about P1857

What does P1857 mean?

Diagnostic Trouble Code (4 interpretations). The control module detected a short circuit to ground in the Transmission Transfer Case Contact Plate 'C' circuit. This is the manufacturer-specific definition used by Ford.

Is P1857 generic or manufacturer-specific?

P1857 is a manufacturer-specific code. In this database it is documented for: Ford, Mitsubishi, VAG. The same number can mean something different on other brands.

Can TuningBot remove P1857 at file level?

If the fault logic lives in the ECU calibration, yes: our DTC Removal file service disables the specific fault entry and, where the ECU needs it, corrects the checksum too. 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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