P1818
Transmission Fluid Pressure Valve Position Switch-Drive Without Drive Ratio
P1818 is an OBD-II diagnostic trouble code meaning: Transmission Fluid Pressure Valve Position Switch-Drive Without Drive Ratio. Common causes: pressure valve position sensor malfunction, open or short circuit in the sensor circuit. Estimated repair cost: $17–56.
Symptoms
- Incorrect gear shifting
- Gear slip
- Hard gear shifting
- Check Engine light comes on
- Reduced transmission efficiency
Causes
- Pressure valve position sensor malfunction
- Open or short circuit in the sensor circuit
- Problems with the transmission control unit
- Low transmission fluid level
- Transmission fluid contamination
How to Fix
- Check the level and condition of the transmission fluid
- Check the integrity of the sensor circuit
- Check the operation of the pressure valve position sensor
- Check the transmission control unit for errors
- If necessary, replace the sensor or transmission fluid
Related codes
Error P1818 by Vehicle Brand
FAQ
What does the P1818 code mean?
P1818 is an OBD-II diagnostic trouble code that indicates: Transmission Fluid Pressure Valve Position Switch-Drive Without Drive Ratio
What causes a P1818 error code?
The most common causes of P1818 include: Pressure valve position sensor malfunction; Open or short circuit in the sensor circuit; Problems with the transmission control unit; Low transmission fluid level.
How do I fix a P1818 diagnostic trouble code?
To fix P1818: Check the level and condition of the transmission fluid. Check the integrity of the sensor circuit. Check the operation of the pressure valve position sensor. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P1818?
Yes, but get it checked soon
How much does it cost to fix P1818?
The estimated repair cost for P1818 is $17–56. Actual cost depends on your vehicle, location, and labor rates.
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