OBD Guide
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P1E39

Auxiliary Transmission Fluid Pump Inverter Performance

P1E39 is an OBD-II diagnostic trouble code meaning: Auxiliary Transmission Fluid Pump Inverter Performance. Common causes: pump inverter fault, wiring harness damage. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Difficulty shifting gears
  • Dips during acceleration
  • Check Engine Light Is On
  • Unusual noises from the transmission area
  • Reduced transmission efficiency

Causes

  • Pump inverter fault
  • Wiring harness damage
  • Bad contacts in the electrical circuit
  • Auxiliary pump malfunction
  • Problems with the transmission control unit

How to Fix

  1. Check the inverter electrical circuit for opens and shorts
  2. Check contacts and connectors for oxidation and damage
  3. Test the pump inverter
  4. Check the operation of the auxiliary pump
  5. If necessary, replace the inverter or pump

Related codes

P1E00P1E01P1E38

FAQ

What does the P1E39 code mean?

P1E39 is an OBD-II diagnostic trouble code that indicates: Auxiliary Transmission Fluid Pump Inverter Performance

What causes a P1E39 error code?

The most common causes of P1E39 include: Pump inverter fault; Wiring harness damage; Bad contacts in the electrical circuit; Auxiliary pump malfunction.

How do I fix a P1E39 diagnostic trouble code?

To fix P1E39: Check the inverter electrical circuit for opens and shorts. Check contacts and connectors for oxidation and damage. Test the pump inverter. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1E39?

Yes, but get it checked soon

How much does it cost to fix P1E39?

The estimated repair cost for P1E39 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat