OBD Guide

P1EB8

Auxiliary Transmission Fluid Pump Control Module Long Term Memory Reset

P1EB8 is an OBD-II diagnostic trouble code meaning: Auxiliary Transmission Fluid Pump Control Module Long Term Memory Reset. Common causes: control module power problems, malfunction of the pump control module itself. Estimated repair cost: $56–167.

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

Symptoms

  • Unstable operation of the transmission in start-stop mode
  • Malfunction indicator light comes on
  • Hard gear shifts after startup
  • Temporary loss of auxiliary pump functions

Causes

  • Control module power problems
  • Malfunction of the pump control module itself
  • Short circuit in control circuit
  • Software error in the module
  • Problems with the wiring harness to the module

How to Fix

  1. Check the supply voltage and module ground
  2. Scan the module for additional errors
  3. Check the integrity of the wiring harness to the module
  4. Reflash the module (if an update is available)
  5. If necessary, replace the pump control module

Related codes

FAQ

What does the P1EB8 code mean?

P1EB8 is an OBD-II diagnostic trouble code that indicates: Auxiliary Transmission Fluid Pump Control Module Long Term Memory Reset

What causes a P1EB8 error code?

The most common causes of P1EB8 include: Control module power problems; Malfunction of the pump control module itself; Short circuit in control circuit; Software error in the module.

How do I fix a P1EB8 diagnostic trouble code?

To fix P1EB8: Check the supply voltage and module ground. Scan the module for additional errors. Check the integrity of the wiring harness to the module. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1EB8?

Yes, but get it checked soon

How much does it cost to fix P1EB8?

The estimated repair cost for P1EB8 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat