OBD Guide
ENFRDEESPT

P1E1D

Auxiliary Transmission Fluid Pump Control Module Hybrid Battery Voltage Isolation Sensor Circuit 1 High Voltage

P1E1D is an OBD-II diagnostic trouble code meaning: Auxiliary Transmission Fluid Pump Control Module Hybrid Battery Voltage Isolation Sensor Circuit 1 High Voltage. Common causes: high voltage insulation sensor malfunction, damage to the wiring in the sensor circuit. Estimated repair cost: $56–278.

Severity
🔴 High
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$56–278 (est.)

Symptoms

  • Check Engine light comes on
  • Possible problems with the operation of the hybrid system
  • The car may go into emergency mode
  • Reduced power or hybrid system failure
  • Possible warnings about high voltage system failure

Causes

  • High Voltage Insulation Sensor Malfunction
  • Damage to the wiring in the sensor circuit
  • Problems with the transmission auxiliary pump control module
  • Short circuit in high voltage system
  • High voltage battery insulation problems

How to Fix

  1. Diagnose the high-voltage system using a scanner
  2. Check the integrity of the wiring to the insulation sensor
  3. Test high voltage insulation sensor
  4. Check transmission auxiliary pump control module
  5. Repair only from an authorized dealer

Related codes

P1E1CP1E1EP0AA6

FAQ

What does the P1E1D code mean?

P1E1D is an OBD-II diagnostic trouble code that indicates: Auxiliary Transmission Fluid Pump Control Module Hybrid Battery Voltage Isolation Sensor Circuit 1 High Voltage

What causes a P1E1D error code?

The most common causes of P1E1D include: High Voltage Insulation Sensor Malfunction; Damage to the wiring in the sensor circuit; Problems with the transmission auxiliary pump control module; Short circuit in high voltage system.

How do I fix a P1E1D diagnostic trouble code?

To fix P1E1D: Diagnose the high-voltage system using a scanner. Check the integrity of the wiring to the insulation sensor. Test high voltage insulation sensor. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1E1D?

Do not drive — repair immediately

How much does it cost to fix P1E1D?

The estimated repair cost for P1E1D is $56–278. Actual cost depends on your vehicle, location, and labor rates.

FRDEESPT

See also: Russian version · NationStat