DTC Fault Trigger Conditions
DTC | Description | Fault Trigger Conditions |
|---|---|---|
B1251:00 Tire Pressure Sensor Low Battery: No Sub Type Information | Sets in continuous memory when attempting to train a TPMS sensor with a low battery. |
Possible Sources
Radio Frequency Interference (RFI) One or more TPMS sensors not trained TPMS sensor
Visual Inspection and Diagnostic Pre-checks
Inspect for Non-Original Equipment Manufacturer (OEM) wheels or run-flat tires. Verify horn operation.
PINPOINT TEST C : B1251:00
C1 TRAIN THE TPMS (TIRE PRESSURE MONITORING SYSTEM) SENSORS TO DETERMINE THE INOPERATIVE SENSOR
Train all 4 tire pressure sensors. REFER to: Tire Pressure Monitoring System (TPMS) Sensor Location Calibration (204-04B Tire Pressure Monitoring System (TPMS), General Procedures).
Did all of the TPMS sensors train and did the horn sound when each sensor was trained?
Yes | The system is operating correctly at this time. | |
|---|---|---|
No | Before installing a new sensor(s): If a sensor does not respond, MOVE the vehicle to rotate the wheels at least one-fourth of a turn and ATTEMPT to activate the same sensor again. If the sensor still does not respond, ATTEMPT to activate the same sensor again. If the sensor still fails to train, ATTEMPT to train the sensor with the vehicle doors open. If the sensor(s) fails to train a second time, INSTALL a new TPMS sensor(s). REFER to: Tire Pressure Monitoring System (TPMS) Sensor (204-04B Tire Pressure Monitoring System (TPMS), Removal and Installation). | |
Diagnosing Radio Frequency Interference Faults
Normal Operation and Fault Conditions
REFER to: Tire Pressure Monitoring System (TPMS) - System Operation and Component Description (204-04B Tire Pressure Monitoring System (TPMS), Description and Operation).
One or more TPMS sensors not being trained or missing, RTM wiring and BCM wiring, or an internal failure of the RTM, GWM or BCM can all present symptoms similar to Radio Frequency Interference (RFI).
Possible Sources
Wiring, terminals or connectors
2016 Mustang workshop publication supplied to Mustang Atlas. Original technical text and illustrations; HTML formatting by Mustang Atlas. Source page numbering is retained for traceability. Follow the configuration, revision, warnings, and cross-references in the material. About this edition.