P1855 Code - Transmission Transfer Case Contact Plate 'C' Open Circuit
Quick Answer
The P1855 code indicates that there is an open circuit in the transmission transfer case contact plate 'C'. Common causes include Faulty contact plate 'C', Corrosion or loose connections in the wiring harness, Damage to the transfer case control module. 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
- P1855 indicates Transmission Transfer Case Contact Plate 'C' Open Circuit.
- Common causes
- Common causes include Faulty contact plate 'C', Corrosion or loose connections in the wiring harness, Damage to the transfer case control module.
- 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 P1855 Description
The P1855 code indicates that there is an open circuit in the transmission transfer case contact plate 'C'. In vehicles with four-wheel drive systems, the transfer case is responsible for distributing power between the front and rear axles. The contact plate 'C' is a crucial component that helps to engage and disengage the transfer case, allowing the vehicle to switch between two-wheel drive and four-wheel drive modes.
Common Causes of P1855
- Faulty contact plate 'C'
- Corrosion or loose connections in the wiring harness
- Damage to the transfer case control module
- Electrical issues such as a blown fuse or relay
- Wear and tear on the contact plate due to prolonged use
Symptoms of P1855
- Difficulty engaging four-wheel drive mode
- Inability to switch between drive modes
- Transmission slipping or jerking
- Dashboard warning light illuminating
- Grinding noises when shifting gears
How to Fix P1855
- Begin by diagnosing the specific cause of the open circuit in the contact plate 'C' using a diagnostic scanner and multimeter.
- Inspect the wiring harness for any signs of damage, corrosion, or loose connections. Repair or replace any faulty wiring as needed.
- Check the contact plate 'C' for wear and tear or damage. Replace the contact plate if necessary.
- Test the transfer case control module to ensure it is functioning correctly. Replace the module if it is found to be faulty.
- Clear the diagnostic trouble codes and test the vehicle to verify that the issue has been resolved.
Cost to Fix P1855
The cost of repairing a transmission transfer case contact plate 'C' open circuit can vary depending on the specific cause of the issue and the cost of parts and labor. On average, this repair can range from $200 to $500, including parts and labor. However, it's important to note that diagnostic time and labor rates at auto repair shops can vary based on location, vehicle make and model, and engine type. It's recommended to obtain quotes from multiple shops to get a more accurate estimate.
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Code P1855 Information for Specific Makes
- P1855 Ford — Transmission Transfer Case Contact Plate 'C' Open Circuit
- P1855 Mitsubishi — Shift Fork 3 Or 4 Opposite Direction Movement
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