AutoCodes – Generic – C1845

C1845 Code - Air Suspension Front Inflator Solenoid Output Circuit Failure

Quick Answer

The Air Suspension Control Module monitors the Air Suspension Front Inflator Solenoid. Common causes include Faulty Air Suspension Front Inflator Solenoid, Air Suspension Front Inflator Solenoid harness is open or shorted, Air Suspension Front Inflator Solenoid circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: C1845 indicates Air Suspension Front Inflator Solenoid Output Circuit Failure.
Common causes: Common causes include Faulty Air Suspension Front Inflator Solenoid, Air Suspension Front Inflator Solenoid harness is open or shorted, Air Suspension Front Inflator Solenoid circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 4,025

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Nov 30, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C1845 Description

The Air Suspension Control Module monitors the Air Suspension Front Inflator Solenoid. The Air Suspension Disable Switch sets the OBDII code when the Air Suspension Front Inflator Solenoid is not to factory specifications.

OBDII Code C1845 - Air Suspension Front Inflator Solenoid Output Circuit Failure - AutoCodes.com — C1845 Code - Air Suspension Front Inflator Solenoid Output Circuit Failure

What does this mean?

What are the Possible Causes of the DTC C1845?

Faulty Air Suspension Front Inflator Solenoid
Air Suspension Front Inflator Solenoid harness is open or shorted
Air Suspension Front Inflator Solenoid circuit poor electrical connection
Faulty Air Suspension Control Module

How to Fix the DTC C1845?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the C1845 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the C1845 code?

Need more information on how to fix the C1845 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C1845 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

C1845 Ford — Air Suspension Front Inflator Solenoid Output Circuit Failure
C1845 Lincoln — Air Suspension Front Inflator Solenoid Output Circuit Failure
C1845 Mercury — Air Suspension Front Inflator Solenoid Output Circuit Failure

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about C1845 Code

1. What are common symptoms of OBDII code C1845?

- Common symptoms include the front of the vehicle sitting lower than usual, uneven suspension height, and difficulty maintaining proper air pressure in the front suspension.

2. What can cause the OBDII code C1845 to trigger?

- The code C1845 can be triggered by a faulty front inflator solenoid, damaged wiring or connectors in the circuit, or issues with the air suspension system.

3. How can I diagnose the cause of OBDII code C1845?

- Diagnosing the issue typically involves conducting a visual inspection of the front inflator solenoid, checking the wiring and connectors for any damage, and using a multimeter to test for continuity and proper voltage in the circuit.

4. Can I still drive my vehicle with OBDII code C1845 present?

- It is not recommended to drive the vehicle with code C1845 present, as it can lead to further damage to the air suspension system and affect the vehicle's handling and ride comfort.

5. What are the repair options for OBDII code C1845?

- Repair options include replacing the front inflator solenoid if faulty, repairing any damaged wiring or connectors, and resetting the fault code using an OBDII scanner.

6. How much does it typically cost to fix OBDII code C1845?

- The cost of fixing OBDII code C1845 can vary depending on the specific issue causing the code, but it may range from $100 to $300 for parts and labor.

7. Can OBDII code C1845 be intermittent?

- Yes, OBDII code C1845 can sometimes be intermittent, especially if the issue is related to loose wiring or a faulty connection in the circuit.

8. Are there any preventative maintenance tips to avoid OBDII code C1845?

- To prevent OBDII code C1845, it is recommended to regularly inspect the air suspension system, ensure proper maintenance of the front inflator solenoid, and address any air suspension issues promptly.

9. Will OBDII code C1845 cause any other problems in my vehicle?

- OBDII code C1845 specifically indicates a front inflator solenoid circuit failure and may not directly cause other problems, but it can impact the performance and safety of the air suspension system.

10. How long does it usually take to repair OBDII code C1845?

- The repair time for OBDII code C1845 can vary depending on the extent of the issue, but it typically takes a few hours to diagnose and fix the problem.