The control module detected that the signal in the Transmission Mode Switch "A" circuit stayed below the expected operating range.
TuningBot DTC Database · v4.37.15
P071B Transmission Mode Switch "A" Circuit Low
Generic (OBD-II) interpretation in the TuningBot DTC database.
What P071B means
Related and nearby codes
How to read P071B
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 P071B
What does P071B mean?
Transmission Mode Switch "A" Circuit Low. The control module detected that the signal in the Transmission Mode Switch "A" circuit stayed below the expected operating range.
Is P071B generic or manufacturer-specific?
P071B is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.
Can TuningBot remove P071B 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
