OBD Guide

P084D

Transmission Fluid Pressure Sensor/Switch H Circuit High

P084D is an OBD-II diagnostic trouble code meaning: Transmission Fluid Pressure Sensor/Switch H Circuit High. Common causes: transmission fluid pressure sensor malfunction, open or short circuit in the sensor circuit. Estimated repair cost: $17–50.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$17–50 (est.)

Symptoms

  • Incorrect gear shifting
  • Car jerking when driving
  • The CHECK ENGINE indicator light comes on.
  • Transition to emergency mode of operation of the transmission

Causes

  • Transmission fluid pressure sensor malfunction
  • Open or short circuit in the sensor circuit
  • Poor contact in the sensor connector
  • Transmission control module (TCM) malfunction

How to Fix

  1. Check the level and condition of the transmission fluid
  2. Visually inspect the sensor circuit for damage
  3. Check the resistance and signal of the pressure sensor
  4. Replace transmission fluid pressure sensor if necessary
  5. Scan TCM error memory

Related codes

Error P084D by Vehicle Brand

FAQ

What does the P084D code mean?

P084D is an OBD-II diagnostic trouble code that indicates: Transmission Fluid Pressure Sensor/Switch H Circuit High

What causes a P084D error code?

The most common causes of P084D include: Transmission fluid pressure sensor malfunction; Open or short circuit in the sensor circuit; Poor contact in the sensor connector; Transmission control module (TCM) malfunction.

How do I fix a P084D diagnostic trouble code?

To fix P084D: Check the level and condition of the transmission fluid. Visually inspect the sensor circuit for damage. Check the resistance and signal of the pressure sensor. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P084D?

Limited driving only, diagnose soon

How much does it cost to fix P084D?

The estimated repair cost for P084D is $17–50. Actual cost depends on your vehicle, location, and labor rates.

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