OBD Guide

C1845

Air Suspension Front Inflator Solenoid Output Circuit Failure

C1845 is an OBD-II diagnostic trouble code meaning: Air Suspension Front Inflator Solenoid Output Circuit Failure. Common causes: open or short circuit in wiring harness, supercharger solenoid malfunction. Estimated repair cost: $56–167.

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

Symptoms

  • Incorrect height of the front of the car
  • Suspension fault indicator is on
  • The air suspension system does not respond to adjustments
  • Unusual noises from air suspension

Causes

  • Open or short circuit in wiring harness
  • Supercharger solenoid malfunction
  • Poor contact in connectors
  • Problems with the suspension control unit
  • Faulty relay or fuse

How to Fix

  1. Check fuses and relays associated with the suspension system
  2. Inspect the wiring harness for damage
  3. Check connections and contacts of solenoid connectors
  4. Test solenoid resistance
  5. Check the operation of the suspension control unit
  6. Replace faulty components

Related codes

FAQ

What does the C1845 code mean?

C1845 is an OBD-II diagnostic trouble code that indicates: Air Suspension Front Inflator Solenoid Output Circuit Failure

What causes a C1845 error code?

The most common causes of C1845 include: Open or short circuit in wiring harness; Supercharger solenoid malfunction; Poor contact in connectors; Problems with the suspension control unit.

How do I fix a C1845 diagnostic trouble code?

To fix C1845: Check fuses and relays associated with the suspension system. Inspect the wiring harness for damage. Check connections and contacts of solenoid connectors. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C1845?

Limited driving only, diagnose soon

How much does it cost to fix C1845?

The estimated repair cost for C1845 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat