The control module detected that the signal in the Electric/Auxiliary Transmission Fluid Pump B Control circuit stayed below the expected operating range.
TuningBot DTC Database · v4.37.15
P27A4 Electric/Auxiliary Transmission Fluid Pump B Control Circuit Low
Generic (OBD-II) interpretation in the TuningBot DTC database.
What P27A4 means
Related and nearby codes
How to read P27A4
Powertrain: engine, transmission and driveline systems.
Generic SAE-standard code: same meaning on every make.
Specific fault index within the subsystem.
Frequently asked questions about P27A4
What does P27A4 mean?
Electric/Auxiliary Transmission Fluid Pump B Control Circuit Low. The control module detected that the signal in the Electric/Auxiliary Transmission Fluid Pump B Control circuit stayed below the expected operating range.
Is P27A4 generic or manufacturer-specific?
P27A4 is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.
Can TuningBot remove P27A4 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: Diagnostic Strategy and DTC Logic
