The P0837 trouble code indicates an issue with the Four Wheel Drive (4WD) switch circuit, specifically relating to range or performance problems. Here’s what you should know:
P0837 Four Wheel Drive (4WD) Switch Circuit Range/Performance
Code symptoms P0837.
1. Difficulty engaging or disengaging the 4WD system.
2. Inoperable 4WD system.
3. Malfunction indicator lamp (MIL) or Check Engine Light (CEL) may illuminate on the dashboard.
Causes of the code P0837.
1. Faulty 4WD switch.
2. Damaged or corroded wiring or connectors in the 4WD switch circuit.
3. Issues with the 4WD control module.
4. Faulty transfer case motor or actuator.
5. Electrical problems in the 4WD system.
Code Solutions P0837.
1. Replace the 4WD switch if it is found to be faulty.
2. Repair or replace any damaged wiring or connectors in the 4WD switch circuit.
3. Address any issues with the 4WD control module.
4. Replace the transfer case motor or actuator if necessary.
5. Ensure proper electrical connections and system integrity.