OBD Guide
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P1E1A

Auxiliary Transmission Fluid Pump Control Module System Voltage High

P1E1A is an OBD-II diagnostic trouble code meaning: Auxiliary Transmission Fluid Pump Control Module System Voltage High. Common causes: pump relay problems, pump control module malfunction. Estimated repair cost: $22–167.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$22–167 (est.)

Symptoms

  • Check Engine Light Is On
  • Irregular transmission operation
  • Gear shifting problems
  • Noise from auxiliary pump
  • The transmission may go into emergency mode

Causes

  • Pump relay problems
  • Pump control module malfunction
  • Short circuit in power supply
  • Wiring harness damage
  • Problems with the generator (increased voltage of the on-board network)

How to Fix

  1. Diagnostics of voltage in the pump circuit
  2. Checking the status of the control module
  3. Inspect the wiring harness for damage
  4. Checking the operation of the pump relay
  5. Generator voltage testing

Related codes

P1E1BP1E10P1E11

FAQ

What does the P1E1A code mean?

P1E1A is an OBD-II diagnostic trouble code that indicates: Auxiliary Transmission Fluid Pump Control Module System Voltage High

What causes a P1E1A error code?

The most common causes of P1E1A include: Pump relay problems; Pump control module malfunction; Short circuit in power supply; Wiring harness damage.

How do I fix a P1E1A diagnostic trouble code?

To fix P1E1A: Diagnostics of voltage in the pump circuit. Checking the status of the control module. Inspect the wiring harness for damage. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1E1A?

Limited driving only, diagnose soon

How much does it cost to fix P1E1A?

The estimated repair cost for P1E1A is $22–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat