P1784
L-R Pressure Switch Circuit
P1784 is an OBD-II diagnostic trouble code meaning: L-R Pressure Switch Circuit. Common causes: pressure sensor malfunction, open or short circuit in the sensor circuit. Estimated repair cost: $17–44.
Symptoms
- Incorrect gear shifting
- Delays when shifting gears
- Jerks when moving
- Check Engine Light on Dashboard
- Emergency transmission
Causes
- Pressure sensor malfunction
- Open or short circuit in the sensor circuit
- Problems with the transmission control module
- Oxidized or damaged connectors
- Lack of transmission fluid
How to Fix
- Check transmission fluid level
- Inspect the sensor connectors and wiring harness
- Check the resistance of the pressure sensor
- Scan the transmission control module for errors
- If necessary, replace the pressure sensor
Related codes
Error P1784 by Vehicle Brand
FAQ
What does the P1784 code mean?
P1784 is an OBD-II diagnostic trouble code that indicates: L-R Pressure Switch Circuit
What causes a P1784 error code?
The most common causes of P1784 include: Pressure sensor malfunction; Open or short circuit in the sensor circuit; Problems with the transmission control module; Oxidized or damaged connectors.
How do I fix a P1784 diagnostic trouble code?
To fix P1784: Check transmission fluid level. Inspect the sensor connectors and wiring harness. Check the resistance of the pressure sensor. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P1784?
Yes, but get it checked soon
How much does it cost to fix P1784?
The estimated repair cost for P1784 is $17–44. Actual cost depends on your vehicle, location, and labor rates.
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