C1791 Ford Code - Air Suspension Left Rear Air Spring/Shock Solenoid Output Circuit Open
Quick Answer
The Vehicle Dynamic Module (VDM) will command the air spring solenoid(s) ON or OFF when certain conditions are met. Common causes include Faulty Air Suspension Left Rear Air Spring/Shock Solenoid, Air Suspension Left Rear Air Spring/Shock Solenoid harness is open or shorted, Air Suspension Left Rear Air Spring/Shock 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
- C1791 Ford indicates Air Suspension Left Rear Air Spring/Shock Solenoid Output Circuit Open.
- Common causes
- Common causes include Faulty Air Suspension Left Rear Air Spring/Shock Solenoid, Air Suspension Left Rear Air Spring/Shock Solenoid harness is open or shorted, Air Suspension Left Rear Air Spring/Shock 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.
Code C1791 Ford Description
What are the Possible Causes of the DTC C1791 Ford?
- Faulty Air Suspension Left Rear Air Spring/Shock Solenoid
- Air Suspension Left Rear Air Spring/Shock Solenoid harness is open or shorted
- Air Suspension Left Rear Air Spring/Shock Solenoid circuit poor electrical connection
- Faulty Vehicle Dynamic Module (VDM)
How to Fix the DTC C1791 Ford?
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 C1791 Ford 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 C1791 Ford Code
1. What are the common symptoms of OBDII code C1791 in a Ford related to the left rear air spring/shock solenoid circuit?
The common symptoms include a noticeable imbalance in the vehicle's ride height, a leaning or sagging appearance on the left side, and potential issues with the vehicle's handling and stability.
2. What causes the OBDII code C1791 in a Ford related to the left rear air spring/shock solenoid circuit?
The code C1791 is typically triggered by an open circuit in the left rear air spring or shock solenoid, which can be caused by wiring issues, a faulty solenoid, or problems with the air suspension system.
3. How can I diagnose the OBDII code C1791 in a Ford related to the left rear air spring/shock solenoid circuit?
Diagnosis involves using a scan tool to retrieve the trouble code, inspecting the wiring and connections to the left rear air spring solenoid, checking for proper voltage and continuity, and conducting a visual inspection for any visible damage or corrosion.
4. Can I continue driving my Ford with the OBDII code C1791 related to the left rear air spring/shock solenoid circuit?
It is not recommended to continue driving the vehicle with this fault, as it can lead to further damage to the air suspension system and compromise the vehicle's handling and safety. It is best to address the issue promptly.
5. How can I repair the OBDII code C1791 in a Ford related to the left rear air spring/shock solenoid circuit?
Repairing the issue involves repairing or replacing the wiring harness, repairing the connections, replacing the left rear air spring solenoid if necessary, and clearing the trouble code from the vehicle's system.
6. Are there any maintenance tips to prevent the occurrence of OBDII code C1791 in a Ford related to the left rear air spring/shock solenoid circuit?
Regularly inspecting the air suspension system components, checking for any signs of wear or damage, and addressing any issues promptly can help prevent the occurrence of this trouble code.
7. How much does it typically cost to repair the OBDII code C1791 in a Ford related to the left rear air spring/shock solenoid circuit?
The cost of repair can vary depending on the extent of the issue, the need for replacement parts, and labor costs. It is recommended to consult with a professional mechanic for an accurate estimate.
8. Will resetting the OBDII system clear the trouble code C1791 related to the left rear air spring/shock solenoid circuit in a Ford?
Resetting the OBDII system may clear the trouble code temporarily, but if the underlying issue causing the code is not addressed, it is likely to reappear. It is crucial to diagnose and repair the root cause of the problem.
9. Can extreme weather conditions affect the occurrence of OBDII code C1791 in a Ford related to the left rear air spring/shock solenoid circuit?
Extreme weather conditions, especially exposure to moisture and corrosion, can exacerbate wiring and connection issues in the air suspension system, potentially leading to the occurrence of code C1791. Protecting the components from harsh conditions can help prevent such issues.
10. Is it possible to bypass the left rear air spring solenoid to clear the OBDII code C1791 in a Ford temporarily?
While it may be possible to bypass the solenoid temporarily, it is not recommended as it can compromise the functionality of the air suspension system and lead to further issues down the line. It is best to address the root cause of the problem for a proper and lasting repair.
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