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TuningBot DTC Database · v4.37.15

P0945 Hydraulic Pump Relay Circuit / Open

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

P · PowertrainTransmissionOBD2

What P0945 means

P0945
Hydraulic Pump Relay Circuit / Open Generic · transmission Data confidence 90%

The control module detected an interruption (open circuit) in the Hydraulic Pump Relay circuit, so the expected electrical continuity was not present.

Possible causes

  • Wiring
  • hydraulic pump relay
  • ECM/PCM/TCM

Related and nearby codes

How to read P0945

P

Powertrain: engine, transmission and driveline systems.

0

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

945

Specific fault index within the subsystem.

Frequently asked questions about P0945

What does P0945 mean?

Hydraulic Pump Relay Circuit / Open. The control module detected an interruption (open circuit) in the Hydraulic Pump Relay circuit, so the expected electrical continuity was not present.

Is P0945 generic or manufacturer-specific?

P0945 is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.

Can TuningBot remove P0945 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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