C1766
Height Control Pump Motor Current
C1766 is an OBD-II diagnostic trouble code meaning: Height Control Pump Motor Current. Common causes: height adjustment pump jammed, air leak in air suspension. Estimated repair cost: $167–556.
Symptoms
- Suspension height adjustment does not work
- The suspension can remain in the extreme upper or lower position
- The suspension fault light comes on
- The system may make unusual noises when attempting to change altitude
Causes
- Height adjustment pump jammed
- Air leak in air suspension
- Problems with electrical wiring to the pump
- Faulty pump motor
- Problems with the suspension control unit
- Short circuit or open circuit in the pump circuit
How to Fix
- Check the integrity of the pump electrical circuit
- Check the condition of the pump itself and its motor
- Check the system for air leaks
- Read real pump current values through a diagnostic scanner
- If necessary, replace the pump or its components
- Check and, if necessary, replace the suspension control unit
Related codes
FAQ
What does the C1766 code mean?
C1766 is an OBD-II diagnostic trouble code that indicates: Height Control Pump Motor Current
What causes a C1766 error code?
The most common causes of C1766 include: Height adjustment pump jammed; Air leak in air suspension; Problems with electrical wiring to the pump; Faulty pump motor.
How do I fix a C1766 diagnostic trouble code?
To fix C1766: Check the integrity of the pump electrical circuit. Check the condition of the pump itself and its motor. Check the system for air leaks. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with C1766?
Limited driving only, diagnose soon
How much does it cost to fix C1766?
The estimated repair cost for C1766 is $167–556. Actual cost depends on your vehicle, location, and labor rates.
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