P1819

Symptoms

• Incorrect gear shifting
• Check Engine Light Illuminates
• The gearbox goes into emergency mode
• Certain programs are not included
• Incorrect display of selector position on the instrument panel

Causes

• Malfunction of the internal mode switch (IMS)
• Problems with wiring 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 and connectors
2. Check the resistance of the mode switch
3. Scan the TCM for additional errors
4. Replace internal mode switch if necessary
5. Reflash or replace the TCM module if it is faulty

Related codes

Error P1819 by Vehicle Brand