Pinpoint Test B : B124D:02: Notes
WARNING: This page is about a different car, the 2018 Lincoln MKC. However, it is still accessible from the selected car via links, so may be relevant.
Normal Operation and Fault Conditions
REFER to: Tire Pressure Monitoring System (TPMS) - System Operation and Component Description .
Communication between the RTM and the TPMS sensors can be interrupted by Radio Frequency Interference (RFI), which can cause intermittent issues that are not vehicle concerns. Radio Frequency Interference (RFI) is generated by electrical motors and appliance operation, cellular telephones, remote transmitters, power inverters and portable entertainment equipment.
DTC Fault Trigger Conditions
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| B124D:02 | Tire Pressure Sensor: General Signal Failure | Set by the BCM in continuous memory when 1, 2 or 3 of the tire pressure sensors are faulted, not communicating with the RTM or when sensor data is not received by the BCM from the RTM. |
Possible Sources
- Radio Frequency Interference (RFI)
- One or more TPMS sensors not trained
- TPMS sensors
Visual Inspection and Diagnostic Pre-checks
- Inspect for customer electronic devices, such as cell phone chargers or GPS units.
- Inspect for Non-Original Equipment Manufacturer (OEM) wheels or run-flat tires.
- Verify horn operation.
- Verify spare tire is not in use.