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TuningBot DTC Database · v4.37.15

P1545 Diagnostic Trouble Code (6 interpretations)

6 manufacturer-specific interpretations across 5 manufacturers in the TuningBot DTC database.

P · PowertrainTransmissionOBD2

Chrysler

1 interpretation
P1545
A/C Clutch Relay Control Circuit Chrysler · transmission Data confidence 62%

The control module detected improper operation of the A/C Clutch Relay Control circuit. This is the manufacturer-specific definition used by Chrysler.

Recommended checks

  • Perform a full module scan
  • Review freeze-frame and occurrence data
  • Confirm the exact vehicle, ECU and software context
  • Inspect relevant wiring and connectors
  • Check applicable OEM service information

Hyundai

1 interpretation
P1545
A/C Compressor Switch Open/Short Hyundai · climate_control Data confidence 62%

The control module detected an open circuit or short circuit condition in the A/C Compressor Switch circuit. This is the manufacturer-specific definition used by Hyundai.

MINI

1 interpretation
P1545
Pedal Position Sensor MINI · engine Data confidence 62%

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

Mitsubishi

1 interpretation
P1545
Radiator outlet engine temperature (ECT) - signal variation Mitsubishi · thermal_management Data confidence 62%

The control module detected a fault associated with the Radiator outlet engine temperature (ECT) - signal variation 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.

Possible causes

  • Wiring
  • engine coolant radiator
  • ECT sensor
  • ECM

VAG

2 interpretations
P1545
Throttle valve control - malfunction VAG · engine Data confidence 62%

The control module detected improper operation of the Throttle valve control. This is the manufacturer-specific definition used by Audi.

Possible causes

  • Throttle valve tight/sticking
  • wiring
  • throttle control unit
Applies to Audi
P1545
Throttle Valve Controller: Malfunction VAG · engine Data confidence 84%

The control module detected improper operation of the Throttle Valve Controller. This is the manufacturer-specific definition used by Volkswagen. Volkswagen Group tools also report it as fault code 17953. Documented across Volkswagen Group applications (Audi, SEAT and Škoda included).

Symptoms

  • Increased Idle Speed
  • Bucking at Load Change

Possible causes

  • Throttle Body dirty
  • Throttle Body Wiring faulty
  • Throttle Body faulty
  • Obstructions in intake air passages

Recommended checks

  • Check Throttle Body Wiring
  • Check Throttle Body
Applies to Volkswagen

Related and nearby codes

How to read P1545

P

Powertrain: engine, transmission and driveline systems.

1

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

545

Specific fault index within the subsystem.

Frequently asked questions about P1545

What does P1545 mean?

Diagnostic Trouble Code (6 interpretations). The control module detected improper operation of the A/C Clutch Relay Control circuit. This is the manufacturer-specific definition used by Chrysler.

Is P1545 generic or manufacturer-specific?

P1545 is a manufacturer-specific code. In this database it is documented for: Chrysler, Hyundai, MINI, Mitsubishi, VAG. The same number can mean something different on other brands.

Can TuningBot remove P1545 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

ECU tuningDyno-tested results by model and engine See the results →

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