P1855
Transmission Transfer Case Contact Plate 'C' Open Circuit
P1855 is an OBD-II diagnostic trouble code meaning: Transmission Transfer Case Contact Plate 'C' Open Circuit. Common causes: broken wires in the contact plate circuit, oxidation or corrosion of contacts. Estimated repair cost: $17–56.
Symptoms
- Check Engine light comes on
- Gear shifting problems
- Downshifting may not work
- Unstable operation of the transfer case
- Transmission transition to emergency mode
Causes
- Broken wires in the contact plate circuit
- Oxidation or corrosion of contacts
- Malfunction of the contact plate itself
- Problems with the transfer box control unit
- Wiring harness damage
How to Fix
- Conduct a visual inspection of wiring and contacts
- Check continuity with a multimeter
- Clean contacts from oxidation
- If necessary, replace the contact plate
- Check and, if necessary, replace damaged wires
Related codes
Error P1855 by Vehicle Brand
FAQ
What does the P1855 code mean?
P1855 is an OBD-II diagnostic trouble code that indicates: Transmission Transfer Case Contact Plate 'C' Open Circuit
What causes a P1855 error code?
The most common causes of P1855 include: Broken wires in the contact plate circuit; Oxidation or corrosion of contacts; Malfunction of the contact plate itself; Problems with the transfer box control unit.
How do I fix a P1855 diagnostic trouble code?
To fix P1855: Conduct a visual inspection of wiring and contacts. Check continuity with a multimeter. Clean contacts from oxidation. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P1855?
Yes, but get it checked soon
How much does it cost to fix P1855?
The estimated repair cost for P1855 is $17–56. Actual cost depends on your vehicle, location, and labor rates.
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