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TuningBot DTC Database · v4.40.3

P1538 Chrysler - A/C Request Circuit High Voltage

Manufacturer-specific interpretation for Chrysler. All interpretations of P1538

P · PowertrainClimate controlOBD2

What P1538 means

P1538
A/C Request Circuit High Voltage Chrysler · climate control Data confidence 62%

The control module detected that the signal in the A/C Request circuit stayed above the expected operating range. 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

Related and nearby codes

How to read P1538

P

Powertrain: engine, transmission and driveline systems.

1

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

538

Specific fault index within the subsystem.

Frequently asked questions about P1538

What does P1538 mean?

A/C Request Circuit High Voltage. The control module detected that the signal in the A/C Request circuit stayed above the expected operating range. This is the manufacturer-specific definition used by Chrysler.

Is P1538 generic or manufacturer-specific?

P1538 is a manufacturer-specific code. In this database it is documented for: Chrysler. The same number can mean something different on other brands.

Can TuningBot remove P1538 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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