4C Pressure Switch Sense Circuit
Table of contents
P0988 RAM Possible Causes
- Faulty 4C Pressure Switch
- 4C Pressure Switch harness is open or shorted
- 4C Pressure Switch circuit poor electrical connection
- Open Transmission Control Relay
- Faulty Transmission Control Module (TCM)
How do I fix code P0988 RAM?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.
Cost of diagnosing the P0988 RAM code
The cost of diagnosing the P0988 RAM code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P0988 RAM Description
The Diagnostic Trouble Code (DTC) P0988 will set if 4C (4th clutch) pressure switch is open or closed at the wrong time in a given gear. For example, this DTC would be set if the 4C pressure switch came on while the transmission was in second gear. The transmission system will default to an immediate shutdown routine.