P1841
Automatic Transmission Fluid Pressure Switch 1
P1841 is an OBD-II diagnostic trouble code meaning: Automatic Transmission Fluid Pressure Switch 1. Common causes: transmission fluid pressure sensor malfunction, open or short circuit in the sensor circuit. Estimated repair cost: $17–56.
Symptoms
- Incorrect gear shifting
- Hard gear shifts
- Automatic transmission goes into emergency mode
- Check Engine Light Illuminates
- Decreased fuel efficiency
Causes
- Transmission fluid pressure sensor malfunction
- Open or short circuit in the sensor circuit
- Poor contact in the sensor connector
- Low or contaminated transmission fluid
- Transmission control module (TCM) problems
How to Fix
- Check the level and condition of the transmission fluid
- Visually inspect the sensor wiring and connectors
- Check sensor resistance and reference voltage
- If necessary, replace the pressure sensor
- Check the operation of the automatic transmission after repair
Related codes
Error P1841 by Vehicle Brand
FAQ
What does the P1841 code mean?
P1841 is an OBD-II diagnostic trouble code that indicates: Automatic Transmission Fluid Pressure Switch 1
What causes a P1841 error code?
The most common causes of P1841 include: Transmission fluid pressure sensor malfunction; Open or short circuit in the sensor circuit; Poor contact in the sensor connector; Low or contaminated transmission fluid.
How do I fix a P1841 diagnostic trouble code?
To fix P1841: Check the level and condition of the transmission fluid. Visually inspect the sensor wiring and connectors. Check sensor resistance and reference voltage. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P1841?
Limited driving only, diagnose soon
How much does it cost to fix P1841?
The estimated repair cost for P1841 is $17–56. Actual cost depends on your vehicle, location, and labor rates.
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