C1756 - Suspension Control Relay Malfunction

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3   
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C1756 Possible Causes

  • Faulty Suspension Control Relay
  • Suspension Control Relay harness is open or shorted
  • Suspension Control Relay circuit poor electrical connection

First diagnose C1756 code

    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 C1756 code

    Labor: 1.0

    The cost of diagnosing the C1756 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.

C1756 Possible Symptoms

  • Anti-Lock Brake System (ABS) Warning Light ON
  • Engine Light ON (or Service Engine Soon Warning Light)

C1756 Description

This relay is to supply the power source to the pump and motor. The relay stays on while the height control is operated. The code is set if with the suspension control relay not activated, an open signal of the suspension control relay is detected for 1 second or more or with the suspension control relay activated, a short signal of the suspension control relay is detected 8 times successively.
OBDII Code C1756 - Suspension Control Relay Malfunction - AutoCodes.com

C1756 More Information

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C1756 Comments

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