AutoCodes – RAM – C156E RAM

C156E RAM Code - Ride Height System Calibration Performance

Quick Answer

The Air Suspension Control Module (ASCM) monitors the Ride Height Air Pump. Common causes include Air Suspension Height Sensor Not Calibrated, Faulty Air Suspension Control Module (ASCM). 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: C156E RAM indicates Ride Height System Calibration Performance.
Common causes: Common causes include Air Suspension Height Sensor Not Calibrated, Faulty Air Suspension Control Module (ASCM).
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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 14,639

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 01, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code C156E RAM Description

The Air Suspension Control Module (ASCM) monitors the Ride Height Air Pump. The ASCM sets the OBDII code when it detects that all of the height sensors have not been calibrated.

OBDII Code C156E RAM - Ride Height System Calibration Performance - AutoCodes.com — C156E RAM Code - Ride Height System Calibration Performance

What does this mean?

What are the Possible Causes of the DTC C156E RAM?

Air Suspension Height Sensor Not Calibrated
Faulty Air Suspension Control Module (ASCM)

How to Fix the DTC C156E RAM?

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 C156E RAM 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 C156E RAM code?

Need more information on how to fix the C156E RAM code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C156E RAM code diagnosed by a professional: Find a repair shop in your area

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 C156E RAM Code

1. What does the OBDII code C156E RAM mean?

C156E indicates a Ride Height System Calibration Performance issue, meaning the vehicle's suspension height calibration is not within the expected parameters.

2. What are the common symptoms of the C156E code?

Symptoms may include an illuminated suspension warning light, uneven ride height, poor handling, or noticeable sagging in the suspension.

3. What causes the C156E code to appear?

Common causes include faulty ride height sensors, damaged wiring, calibration errors, or issues with the air suspension system components.

4. Can I drive with the C156E code active?

While the vehicle may still be drivable, ignoring the code can lead to uneven suspension wear, reduced handling performance, or further damage to the suspension system.

5. How is the C156E code diagnosed?

A technician will use a scan tool to confirm the code, inspect the ride height sensors, check for wiring issues, and verify the calibration settings of the suspension system.

6. What repairs are needed to fix the C156E code?

Repairs may include replacing faulty ride height sensors, repairing or replacing damaged wiring, recalibrating the suspension system, or addressing air suspension leaks.

7. Can I reset the C156E code without fixing the issue?

Resetting the code without addressing the root cause will likely result in the code returning and could worsen suspension-related problems over time.

8. How much does it cost to repair a C156E code?

Costs vary depending on the issue, but repairs like sensor replacement or recalibration typically range from $200 to $600, while more extensive suspension repairs can be higher.

9. Can a DIYer fix the C156E code?

If the issue is minor, such as recalibrating the system, a knowledgeable DIYer with the right tools might fix it. However, diagnosing and repairing complex suspension issues usually requires professional expertise.

10. How can I prevent the C156E code from occurring?

Regular maintenance, inspecting suspension components for wear or damage, and addressing warning signs promptly can help prevent issues leading to the C156E code.