P1890
Shift Control System
P1890 is an OBD-II diagnostic trouble code meaning: Shift Control System. Common causes: shift solenoids malfunction, problems with control system wiring or connectors. Estimated repair cost: $17–167.
Symptoms
- The car goes into emergency automatic transmission mode
- Difficult or harsh gear shifting
- Inability to shift into certain gears
- Check Engine light comes on
- Reduced acceleration dynamics
Causes
- Shift solenoids malfunction
- Problems with control system wiring or connectors
- Low or contaminated transmission fluid
- Mechanical damage inside the gearbox
- Transmission control module (TCM) malfunctions
How to Fix
- Check the level and condition of the transmission fluid
- Diagnose electrical circuits and connectors of the control system
- Check the operation of the switching solenoids
- Scan the transmission control unit for errors
- If necessary, replace faulty control system components
Related codes
Error P1890 by Vehicle Brand
FAQ
What does the P1890 code mean?
P1890 is an OBD-II diagnostic trouble code that indicates: Shift Control System
What causes a P1890 error code?
The most common causes of P1890 include: Shift solenoids malfunction; Problems with control system wiring or connectors; Low or contaminated transmission fluid; Mechanical damage inside the gearbox.
How do I fix a P1890 diagnostic trouble code?
To fix P1890: Check the level and condition of the transmission fluid. Diagnose electrical circuits and connectors of the control system. Check the operation of the switching solenoids. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P1890?
Limited driving only, diagnose soon
How much does it cost to fix P1890?
The estimated repair cost for P1890 is $17–167. Actual cost depends on your vehicle, location, and labor rates.
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