OBD Guide

P1DA9

Transmission Fluid Temperature Rationaity

P1DA9 is an OBD-II diagnostic trouble code meaning: Transmission Fluid Temperature Rationaity. Common causes: transmission fluid temperature sensor malfunction, open or short circuit in the sensor circuit. Estimated repair cost: $17–56.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$17–56 (est.)

Symptoms

  • Transmission of the gearbox into emergency mode
  • Hard or delayed gear shifts
  • Check Engine Light Illuminates
  • Reduced transmission efficiency
  • Possible overheating of transmission fluid

Causes

  • Transmission fluid temperature sensor malfunction
  • Open or short circuit in the sensor circuit
  • Poor contact in the sensor connector
  • Low or contaminated transmission fluid
  • Problems with the transmission control unit

How to Fix

  1. Check the level and condition of the transmission fluid
  2. Inspect the electrical circuit of the sensor for damage
  3. Check the connectors and contacts of the sensor
  4. Test or replace temperature sensor
  5. Scan the control unit for additional errors

Related codes

FAQ

What does the P1DA9 code mean?

P1DA9 is an OBD-II diagnostic trouble code that indicates: Transmission Fluid Temperature Rationaity

What causes a P1DA9 error code?

The most common causes of P1DA9 include: Transmission fluid temperature 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 P1DA9 diagnostic trouble code?

To fix P1DA9: Check the level and condition of the transmission fluid. Inspect the electrical circuit of the sensor for damage. Check the connectors and contacts of the sensor. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1DA9?

Limited driving only, diagnose soon

How much does it cost to fix P1DA9?

The estimated repair cost for P1DA9 is $17–56. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat