C1556 Jeep Code - Ride Height Air Pressure Sensor
Quick Answer
The Air Suspension Control Module (ASCM) monitors the Ride Height Air Pressure Sensor. Common causes include Faulty Ride Height Air Pressure Sensor, Ride Height Air Pressure Sensor harness is open or shorted, Ride Height Air Pressure Sensor 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
- C1556 Jeep indicates Ride Height Air Pressure Sensor.
- Common causes
- Common causes include Faulty Ride Height Air Pressure Sensor, Ride Height Air Pressure Sensor harness is open or shorted, Ride Height Air Pressure Sensor 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.
Code C1556 Jeep Description
What are the Possible Causes of the DTC C1556 Jeep?
- Faulty Ride Height Air Pressure Sensor
- Ride Height Air Pressure Sensor harness is open or shorted
- Ride Height Air Pressure Sensor circuit poor electrical connection
- Faulty Air Suspension Control Module (ASCM)
How to Fix the DTC C1556 Jeep?
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.
Code Tech Notes
C1556-14-RIDE HEIGHT AIR PRESSURE SENSOR - CIRCUIT SHORT TO GROUND OR OPEN
C1556-96-RIDE HEIGHT AIR PRESSURE SENSOR - COMPONENT INTERNAL FAILURE
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the C1556 Jeep 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.
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Frequently Asked Questions about C1556 Jeep Code
1. What does the OBDII code C1556 mean on a Jeep?
C1556 indicates an issue with the Ride Height Air Pressure Sensor, which is part of the suspension system that monitors and adjusts the vehicle's ride height.
2. What are the symptoms of code C1556 in a Jeep?
Common symptoms include uneven ride height, a suspension warning light on the dashboard, or the air suspension failing to adjust properly.
3. What causes the C1556 code to appear in a Jeep?
This code is typically caused by a faulty ride height air pressure sensor, damaged wiring or connectors, or an issue with the air suspension control module.
4. Can I drive my Jeep with the C1556 code active?
While the vehicle may still be drivable, it is not recommended as the suspension system may not function properly, leading to a rougher ride and potential safety concerns.
5. How do I fix the C1556 code on my Jeep?
Inspect the ride height air pressure sensor and its wiring for damage. Replace the sensor if necessary, and ensure all connections are secure. If the problem persists, further diagnosis of the suspension control module may be needed.
6. How do I know if the ride height air pressure sensor is faulty?
A faulty sensor may show incorrect ride height readings, cause the suspension system to malfunction, or trigger the C1556 code during an OBDII scan.
7. Do I need to calibrate the suspension system after replacing the ride height air pressure sensor?
Yes, in most cases, the air suspension system will need to be recalibrated using a diagnostic tool after sensor replacement to ensure proper operation.
8. Can a software issue cause the C1556 code on a Jeep?
Yes, outdated or corrupted software in the air suspension control module can sometimes trigger this code. Updating the module software may resolve the issue.
9. How much does it cost to repair the C1556 code on a Jeep?
The repair cost can vary, but replacing the ride height air pressure sensor typically costs $100–$300 for parts and labor, depending on the model and location.
10. Will clearing the C1556 code fix the problem?
Clearing the code without addressing the underlying issue will not permanently resolve the problem. The code will likely return until the root cause is repaired.
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