Ride Height Air Pressure Sensor
Table of contents
C1556 RAM Possible Causes
- Faulty Ride Height Air Pressure Sensor
- Ride Height Air Pressure Sensor harness is open or shorted
- Ride Height Air Pressure Sensor circuit poor electrical connection
- Faulty Air Suspension Control Module (ASCM)
How do I fix code C1556 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.
Tech Notes
- C1556-12-RIDE HEIGHT AIR PRESSURE SENSOR – CIRCUIT SHORT TO BATTERY
- C1556-14-RIDE HEIGHT AIR PRESSURE SENSOR – CIRCUIT SHORT TO GROUND OR OPEN
- C1556-96-RIDE HEIGHT AIR PRESSURE SENSOR – COMPONENT INTERNAL FAILURE
Cost of diagnosing the C1556 RAM code
The cost of diagnosing the C1556 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
- Anti-Lock Brake System (ABS) Warning Light ON
- Engine Light ON (or Service Engine Soon Warning Light)
C1556 RAM Description
The Air Suspension Control Module (ASCM) monitors the Ride Height Air Pressure Sensor. The ASCM sets the OBDII code when the Ride Height Air Pressure Sensor is not to factory specifications while the ignition is in the Run position.