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P01B4
Alternative Fuel Rail Temperature Sensor Circuit
Generic · engine
Data confidence
65%
The control module detected improper operation of the Alternative Fuel Rail Temperature circuit.
TuningBot DTC Database · v4.37.14
P01B4 Alternative Fuel Rail Temperature Sensor Circuit
Generic (OBD-II) interpretation in the TuningBot DTC database.
What P01B4 means
Related and nearby codes
How to read P01B4
P
Powertrain: engine, transmission and driveline systems.
0
Generic SAE-standard code: same meaning on every make.
1B4
Specific fault index within the subsystem.
Frequently asked questions about P01B4
What does P01B4 mean?
Alternative Fuel Rail Temperature Sensor Circuit. The control module detected improper operation of the Alternative Fuel Rail Temperature circuit.
Is P01B4 generic or manufacturer-specific?
P01B4 is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.
Can TuningBot remove P01B4 at file level?
If the fault logic lives in the ECU calibration, yes: our DTC Removal file service disables the specific fault entry and, where the ECU needs it, corrects the checksum too. 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