C1740
Left Rear Height Control Solenoid Valve Circuit
C1740 is an OBD-II diagnostic trouble code meaning: Left Rear Height Control Solenoid Valve Circuit. Common causes: open or short circuit in wiring harness, height adjustment solenoid valve malfunction. Estimated repair cost: $89–167.
Symptoms
- Uneven vehicle position (left rear corner lower or higher)
- Suspension fault indicator is on
- Reduced riding comfort
Causes
- Open or short circuit in wiring harness
- Height adjustment solenoid valve malfunction
- Problems with the suspension control unit
- Corrosion of contacts or connectors
How to Fix
- Check the integrity of the wiring harness at the solenoid circuit section
- Measure the solenoid resistance (compare with the manufacturer's standard)
- Check the power and control signal at the solenoid connector
- If necessary, replace the solenoid or repair the wiring harness.
Related codes
FAQ
What does the C1740 code mean?
C1740 is an OBD-II diagnostic trouble code that indicates: Left Rear Height Control Solenoid Valve Circuit
What causes a C1740 error code?
The most common causes of C1740 include: Open or short circuit in wiring harness; Height adjustment solenoid valve malfunction; Problems with the suspension control unit; Corrosion of contacts or connectors.
How do I fix a C1740 diagnostic trouble code?
To fix C1740: Check the integrity of the wiring harness at the solenoid circuit section. Measure the solenoid resistance (compare with the manufacturer's standard). Check the power and control signal at the solenoid connector. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with C1740?
Limited driving only, diagnose soon
How much does it cost to fix C1740?
The estimated repair cost for C1740 is $89–167. Actual cost depends on your vehicle, location, and labor rates.
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