Need help asap

[Gomango]

Ok guys I have a problem. I have the abs light and the ebrake light on. The truck is throwing a 37 "rear sensor erratic" and a p0869 "line pressure high malfunction". I just replaced the rear sensor and the lights came back on. I am selling the truck in a few days so I need it fixed. Does anyone know what's going on?

 

[AlexP]

P0869
Possible Causes

- (F856) 5-VOLT SUPPLY CIRCUIT OPEN
- LINE PRESSURE SENSOR CONNECTION
- (T140) PRESSURE CONTROL SOLENOID CONTROL CIRCUIT OPEN
- (F856) 5-VOLT SUPPLY CIRCUIT SHORT TO GROUND
- (T140) PRESSURE CONTROL SOLENOID CONTROL CIRCUIT SHORT TO GROUND
- TRANSMISSION CONTROL RELAY OUTPUT CIRCUIT
- LINE PRESSURE SENSOR
- STUCK OR STICKING MAIN REGULATOR VALVE
- POWERTRAIN CONTROL MODULE

Code 37


Possible Causes
- INTERMITTENT REAR WHEEL SPEED SENSOR DTC
- REAR WHEEL SPEED SENSOR (+) CIRCUIT SHORT TO GROUND
- REAR WHEEL SPEED SENSOR (-) CIRCUIT SHORT TO GROUND
- REAR WHEEL SPEED SENSOR (+) CIRCUIT OPEN
- REAR WHEEL SPEED SENSOR (-) CIRCUIT OPEN
- REAR WHEEL SPEED SENSOR (+) CIRCUIT SHORTED TO VOLTAGE
- REAR WHEEL SPEED SENSOR (-) CIRCUIT SHORTED TO VOLTAGE
- REAR WHEEL SPEED SENSOR (+) CIRCUIT SHORTED TO THE REAR WHEEL SPEED SENSOR (-) CIRCUIT
- TONE WHEEL
- EXCESSIVE REAR WHEEL SPEED SENSOR AIR GAP
- WHEEL BEARING/REAR DIFFERENTIAL
- REAR WHEEL SPEED SENSOR
- CONTROLLER ANTI-LOCK BRAKE

I hope this gives you some help with finding the problem prior to selling the vehicle.

 

[Harley Harrold]

This might not be your cause, but my truck did the same thing, it was the tone ring in the diff. that was damaged, three teeth missing, which turned on the lights.