P1825

Symptoms

• Incorrect display of gear selector position on the dashboard
• Gear shifting problems
• Car will not start in 'P' or 'N' position
• The gearbox goes into emergency mode
• Check Engine light comes on

Causes

• Malfunction of the internal mode switch
• Problems with the wiring harness to the switch
• Poor contact in connectors
• Transmission control module (TCM) malfunction
• Mechanical damage to the switch

How to Fix

1. Check the condition of the wiring harness and connectors
2. Test the resistance of the mode switch
3. Check switch signals using a scanner
4. If necessary, replace the internal mode switch
5. Reflash or replace the TCM module if necessary

Related codes

Error P1825 by Vehicle Brand