C1540 RAM - Air Suspension Left Rear Ride Height Level Control

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3    What is this?
Table of contents

C1540 RAM Possible Causes

  • Faulty Left Rear Ride Air Spring Control Valve
  • Faulty Air Suspension Solenoid
  • Air Suspension Solenoid harness is open or shorted
  • Air Suspension Solenoid circuit poor electrical connection
  • Faulty Air Suspension Control Module (ASCM)

How do I fix code C1540 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.
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Tech Notes

C1540-11-LEFT REAR RIDE HEIGHT LEVEL CONTROL - CIRCUIT SHORT TO GROUND
C1540-12-LEFT REAR RIDE HEIGHT LEVEL CONTROL - CIRCUIT SHORT TO BATTERY
C1540-13-LEFT REAR RIDE HEIGHT LEVEL CONTROL - CIRCUIT OPEN
C1540-96-LEFT REAR RIDE HEIGHT LEVEL CONTROL - COMPONENT INTERNAL FAILURE

Cost of diagnosing the C1540 RAM code

Labor: 1.0

The cost of diagnosing the C1540 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)

C1540 RAM Description

The Air Suspension Control Module (ASCM) monitors the Left Rear Ride Air Spring Control Valve. The ECM sets the OBDII code when the Air Suspension Control Module (ASCM) detects when the Left Rear Ride Air Spring Control Valve is not to factory specifications while the ignition is in the Run position.
OBDII Code C1540 Ram - Air Suspension Left Rear Ride Height Level Control - AutoCodes.com

More Information

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