C1805 Ford Code - Mismatched PCM and/or ABS Module
Quick Answer
When the ignition is turned to the RUN position, the Anti-Lock Brake System (ABS) Module and the Powertrain Control Module (PCM) share Vehicle Identification Number (VIN) information over the High Speed Controller Area Network (HS-CAN) bus. Common causes include Reprogram Powertrain Control Module (PCM) ("Flashing"), Faulty Anti-Lock Brake System (ABS) Module, Anti-Lock Brake System (ABS) Module harness is open or shorted. 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
- C1805 Ford indicates Mismatched PCM and/or ABS Module.
- Common causes
- Common causes include Reprogram Powertrain Control Module (PCM) ("Flashing"), Faulty Anti-Lock Brake System (ABS) Module, Anti-Lock Brake System (ABS) Module harness is open or shorted.
- 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 C1805 Ford Description
What are the Possible Causes of the DTC C1805 Ford?
- Reprogram Powertrain Control Module (PCM) ("Flashing")
- Faulty Anti-Lock Brake System (ABS) Module
- Anti-Lock Brake System (ABS) Module harness is open or shorted
- Anti-Lock Brake System (ABS) Module circuit poor electrical connection
- Faulty Powertrain Control Module (PCM)
How to Fix the DTC C1805 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 C1805 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 C1805 Ford Code
1. What are common symptoms of OBDII code C1805 in a Ford vehicle?
- Common symptoms include the ABS warning light staying on, loss of communication with the ABS module, and potential issues with the vehicle's stability control system.
2. What does the OBDII code C1805 Ford indicate?
- The code C1805 indicates a mismatch between the Powertrain Control Module (PCM) and/or the Anti-lock Braking System (ABS) module in the vehicle.
3. What are the possible causes of the C1805 code in a Ford vehicle?
- The code C1805 can be triggered by a faulty ABS module, a malfunctioning PCM, wiring issues, or a software communication error between the modules.
4. How can I diagnose the cause of the C1805 code in my Ford vehicle?
- Diagnosing the C1805 code typically involves using a diagnostic scanner to retrieve the specific fault codes, checking the wiring connections between the PCM and ABS module, and performing a software update if necessary.
5. Is it safe to continue driving with the C1805 code present in a Ford vehicle?
- It is not recommended to drive with the C1805 code present, as it can affect the proper functioning of the ABS system and compromise the vehicle's safety features.
6. Can I reset the C1805 code in my Ford vehicle on my own?
- While you can clear the code temporarily with a diagnostic scanner, it is important to address the underlying issue causing the code to prevent it from reoccurring.
7. How much does it typically cost to repair the C1805 code in a Ford vehicle?
- The cost of repairing the C1805 code can vary depending on the specific cause, but it may involve replacing the ABS module, PCM, or addressing wiring issues, which can range from a few hundred to over a thousand dollars.
8. Are there any DIY repair tips for addressing the C1805 code in a Ford vehicle?
- DIY repair tips may include checking and cleaning the wiring connections, ensuring proper grounding, and performing a software update if applicable. However, complex repairs may require professional assistance.
9. Can the C1805 code be intermittent in a Ford vehicle?
- Yes, the C1805 code can sometimes be intermittent, meaning it may come and go depending on the specific conditions or issues triggering the mismatch between the PCM and ABS module.
10. How long does it typically take to repair the C1805 code in a Ford vehicle?
- The repair time for the C1805 code can vary depending on the complexity of the issue, availability of parts, and the skills of the technician, but it may range from a few hours to a full day.
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