PINPOINT TEST X : DTCs B1A69:11 AND B1A69:15: Notes
WARNING: This page is about a different car, the 2015 Lincoln MKT. However, it is still accessible from the selected car via links, so may be relevant.
Diagnostic Overview
Diagnostics in this article assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Service Information for information about these practices.
Refer to Automatic Climate Control System , for schematic and connector information.
Normal Operation and Fault Conditions
The humidity sensor receives power from the HVAC reference voltage circuit. The sensor modifies voltage depending on the humidity in the air. The HVAC module translates the voltage signal into a humidity reading.
DTC Fault Trigger Conditions
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| B1A69:11 | Humidity Sensor: Circuit Short To Ground | The HVAC module senses less than expected voltage on the humidity sensor circuit, indicating a short to ground or sensor. |
| B1A69:15 | Humidity Sensor: Circuit Short To Battery or Open | The HVAC module senses greater than expected voltage on the humidity sensor circuit, indicating a short voltage or an open circuit or sensor. |
Possible Sources
- Wiring, terminals or connectors
- In-vehicle temperature/humidity sensor
- HVAC module
Visual Inspection and Diagnostic Pre-checks
- Make sure the in-vehicle temperature/humidity sensor harness is not chaffed.