OBD Guide
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P1D34

Transmission Gear Position Learn Not Run

P1D34 is an OBD-II diagnostic trouble code meaning: Transmission Gear Position Learn Not Run. Common causes: training procedure not completed, malfunction of gear position sensors. Estimated repair cost: ~$56.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
~$56 (est.)

Symptoms

  • Incorrect gear shifting
  • Jerks when switching
  • Switching delays
  • Switching to emergency mode

Causes

  • Training procedure not completed
  • Malfunction of gear position sensors
  • Transmission hydraulic problems
  • Transmission control module (TCM) malfunction
  • Mechanical damage to the gearbox

How to Fix

  1. Perform gear learning procedure using diagnostic equipment
  2. Check gear position sensors
  3. Check the level and condition of the transmission fluid
  4. Check the operation of the transmission control module (TCM)
  5. Carry out diagnostics of the mechanical part of the gearbox

Related codes

P1D35P1D36P1D37

FAQ

What does the P1D34 code mean?

P1D34 is an OBD-II diagnostic trouble code that indicates: Transmission Gear Position Learn Not Run

What causes a P1D34 error code?

The most common causes of P1D34 include: Training procedure not completed; Malfunction of gear position sensors; Transmission hydraulic problems; Transmission control module (TCM) malfunction.

How do I fix a P1D34 diagnostic trouble code?

To fix P1D34: Perform gear learning procedure using diagnostic equipment. Check gear position sensors. Check the level and condition of the transmission fluid. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1D34?

Yes, but get it checked soon

How much does it cost to fix P1D34?

The estimated repair cost for P1D34 is ~$56. Actual cost depends on your vehicle, location, and labor rates.

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