OBD Guide
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C1846

Air Suspension Front Inflator Solenoid Output Circuit Open

C1846 is an OBD-II diagnostic trouble code meaning: Air Suspension Front Inflator Solenoid Output Circuit Open. Common causes: open or short circuit in wiring harness, boost solenoid malfunction. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Reduced ride quality
  • Uneven body position
  • Suspension fault indicator is on

Causes

  • Open or short circuit in wiring harness
  • Boost solenoid malfunction
  • Problems with the suspension control unit
  • Poor contact in connectors

How to Fix

  1. Check the integrity of the wiring harness to the solenoid
  2. Test the solenoid control circuit
  3. Check solenoid resistance
  4. Inspect connectors for oxidation
  5. If necessary, replace the solenoid or repair the harness.

Related codes

C1845C1847C1848

FAQ

What does the C1846 code mean?

C1846 is an OBD-II diagnostic trouble code that indicates: Air Suspension Front Inflator Solenoid Output Circuit Open

What causes a C1846 error code?

The most common causes of C1846 include: Open or short circuit in wiring harness; Boost solenoid malfunction; Problems with the suspension control unit; Poor contact in connectors.

How do I fix a C1846 diagnostic trouble code?

To fix C1846: Check the integrity of the wiring harness to the solenoid. Test the solenoid control circuit. Check solenoid resistance. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C1846?

Limited driving only, diagnose soon

How much does it cost to fix C1846?

The estimated repair cost for C1846 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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