The P0814 trouble code pertains to the transmission range display circuit. Below are the details you need:
P0814 Transmission Range Display Circuit
Code symptoms P0814.
1. Malfunctioning gear display on the dashboard.
2. Incorrect or erratic gear indicator readings on the instrument cluster.
3. In some cases, the Check Engine Light (CEL) or Malfunction Indicator Lamp (MIL) may illuminate.
Causes of the code P0814.
1. Faulty transmission range display switch or sensor.
2. Wiring issues such as shorts, opens, or damaged wiring harness.
3. Corroded or loose electrical connections related to the transmission range display circuit.
4. Malfunctioning instrument cluster or display module.
5. Issues with the transmission control module (TCM) or body control module (BCM).
Code Solutions P0814.
1. Use an OBD-II scanner to retrieve freeze frame data and any other stored trouble codes. This information can provide insight into when and how the malfunction occurred.
2. Inspect the transmission range display switch orsensor and its wiring for signs of damage, corrosion, or loose connections. Replace or repair any damaged components or wiring as needed.
3. Perform a continuity test on the transmission range display circuit to check for any electrical faults. Repair any open circuits or shorts found during the test.
4. Test the transmission range display switch or sensor using a multimeter to verify its functionality. If it’s not working properly, replace it with a new one.
5. Check the instrument cluster or display module for any fault codes or malfunctions related to the transmission range display circuit. If necessary, perform a diagnostic scan of the module and address any issues found.
6. If all electrical components and wiring are in good condition and functioning properly, the problem may be related to the TCM or BCM. Further diagnostics of these modules may be necessary to identify and address any issues.