The control module detected that the signal in the A/C Request circuit stayed below the expected operating range. This is the manufacturer-specific definition used by Chevrolet.
TuningBot DTC Database · v4.37.15
P1537 Diagnostic Trouble Code (5 interpretations)
5 manufacturer-specific interpretations across 5 manufacturers in the TuningBot DTC database.
Chevrolet
1 interpretation
Chrysler
1 interpretationThe control module detected that the signal in the A/C Request circuit stayed below 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
Ford
1 interpretationThe control module determined that the Intake Manifold Runner Control did not change state as commanded and appears stuck. This is the manufacturer-specific definition used by Ford.
Possible causes
- Wiring
- hoses blocked
- mechanical fault
- ECM
Mazda
1 interpretationThe control module determined that the Intake manifold air control solenoid, bank 1 - solenoid did not change state as commanded and appears stuck. This is the manufacturer-specific definition used by Mazda.
Possible causes
- Wiring
- intake manifold air control solenoid
- mechanical fault
VAG
1 interpretationThe control module detected improper operation of the Fuel shut - off solenoid. This is the manufacturer-specific definition used by Audi.
Possible causes
Fuel shut - off solenoid (leaking/sticking)
Related and nearby codes
How to read P1537
Powertrain: engine, transmission and driveline systems.
Manufacturer-defined range: the meaning can differ between brands.
Specific fault index within the subsystem.
Frequently asked questions about P1537
What does P1537 mean?
Diagnostic Trouble Code (5 interpretations). The control module detected that the signal in the A/C Request circuit stayed below the expected operating range. This is the manufacturer-specific definition used by Chevrolet.
Is P1537 generic or manufacturer-specific?
P1537 is a manufacturer-specific code. In this database it is documented for: Chevrolet, Chrysler, Ford, Mazda, VAG. The same number can mean something different on other brands.
Can TuningBot remove P1537 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
Understand the system behind this code: Swirl Flaps
