Pinpoint Test C: B1251:00
WARNING: This page is about a different car, the 2022 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
- Normal Operation and Fault Conditions
DTC Fault Trigger Conditions
DTC Description Fault Trigger Condition BCM B1251:00 Tire Pressure Sensor Low Battery: No Sub Type Information Sets in continuous memory when attempting to train a TPMS sensor(s) with a low battery. The TPMS warning indicator flashes for 70 seconds and then remains on continuously when the ignition is turned to the ON position, and the message center displays TIRE PRESSURE SENSOR FAULT. Possible Sources
- RFI
- One or more TPMS sensors not trained
- TPMS sensor
Visual Inspection and Pre-checks
- Inspect for Non-Original Equipment Manufacturer (OEM) wheels or run-flat tires.
- Verify horn operation.
- 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
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