OBD Guide
ENFRDEESPT

P1E27

Auxiliary Transmission Fluid Pump Control Module Hybrid/EV Battery System Voltage High Voltage

P1E27 is an OBD-II diagnostic trouble code meaning: Auxiliary Transmission Fluid Pump Control Module Hybrid/EV Battery System Voltage High Voltage. Common causes: auxiliary pump control module malfunction, problems with high voltage battery. Estimated repair cost: $167–556.

Severity
🔴 High
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$167–556 (est.)

Symptoms

  • Check Engine light comes on
  • Reduced vehicle performance
  • Gear shifting problems
  • Disabling the hybrid system
  • Transmission overheating

Causes

  • Auxiliary pump control module malfunction
  • Problems with high voltage battery
  • Voltage converter fault
  • Damage to high voltage system wiring
  • Software error in the control system

How to Fix

  1. High voltage system diagnostics
  2. Checking the pump control module
  3. Voltage converter testing
  4. Checking the integrity of high-voltage wiring
  5. Control system software update
  6. Repair only from an authorized dealer

Related codes

P1E00P1E28

FAQ

What does the P1E27 code mean?

P1E27 is an OBD-II diagnostic trouble code that indicates: Auxiliary Transmission Fluid Pump Control Module Hybrid/EV Battery System Voltage High Voltage

What causes a P1E27 error code?

The most common causes of P1E27 include: Auxiliary pump control module malfunction; Problems with high voltage battery; Voltage converter fault; Damage to high voltage system wiring.

How do I fix a P1E27 diagnostic trouble code?

To fix P1E27: High voltage system diagnostics. Checking the pump control module. Voltage converter testing. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1E27?

Do not drive — repair immediately

How much does it cost to fix P1E27?

The estimated repair cost for P1E27 is $167–556. Actual cost depends on your vehicle, location, and labor rates.

FRDEESPT

See also: Russian version · NationStat