P1844
Transmission Fluid Pressure Sensor/Switch 'A' Circuit Intermittent
P1844 is an OBD-II diagnostic trouble code meaning: Transmission Fluid Pressure Sensor/Switch 'A' Circuit Intermittent. Common causes: damage to the sensor wiring harness, poor contact in the sensor connector. Estimated repair cost: $17–56.
Symptoms
- Incorrect gear shifting
- Gear slip
- Check Engine light comes on
- Jerks when shifting gears
- Switching to emergency mode of the gearbox
Causes
- Damage to the sensor wiring harness
- Poor contact in the sensor connector
- Malfunction of the pressure sensor itself
- Circuit Grounding Problems
- Transmission control module (TCM) malfunction
How to Fix
- Check the integrity of the sensor wiring harness
- Clean and check the contacts in the sensor connector
- Check sensor resistance and reference voltage
- Replace transmission fluid pressure sensor if necessary
- Check TCM operation
Related codes
Error P1844 by Vehicle Brand
FAQ
What does the P1844 code mean?
P1844 is an OBD-II diagnostic trouble code that indicates: Transmission Fluid Pressure Sensor/Switch 'A' Circuit Intermittent
What causes a P1844 error code?
The most common causes of P1844 include: Damage to the sensor wiring harness; Poor contact in the sensor connector; Malfunction of the pressure sensor itself; Circuit Grounding Problems.
How do I fix a P1844 diagnostic trouble code?
To fix P1844: Check the integrity of the sensor wiring harness. Clean and check the contacts in the sensor connector. Check sensor resistance and reference voltage. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P1844?
Yes, but get it checked soon
How much does it cost to fix P1844?
The estimated repair cost for P1844 is $17–56. Actual cost depends on your vehicle, location, and labor rates.
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