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TuningBot DTC Database · v4.37.15

P0956 ASM Mode Circuit Range/Performance

Generic (OBD-II) interpretation in the TuningBot DTC database.

P · PowertrainTransmissionOBD2

What P0956 means

P0956
ASM Mode Circuit Range/Performance Generic · transmission Data confidence 90%

The control module judged the ASM Mode signal implausible: it stayed inside electrical limits but did not match the value expected for the current operating conditions.

Possible causes

  • Wiring
  • poor connection
  • ECM/PCM/TCM

Related and nearby codes

How to read P0956

P

Powertrain: engine, transmission and driveline systems.

0

Generic SAE-standard code: same meaning on every make.

956

Specific fault index within the subsystem.

Frequently asked questions about P0956

What does P0956 mean?

ASM Mode Circuit Range/Performance. The control module judged the ASM Mode signal implausible: it stayed inside electrical limits but did not match the value expected for the current operating conditions.

Is P0956 generic or manufacturer-specific?

P0956 is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.

Can TuningBot remove P0956 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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