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Code P1E3A

Quick reference

P1E3A at a glance

Plain-language meaning
This code means that the car's computer is having trouble getting enough power to control one of the electric motors that help the car move.
Urgency
High – This issue can affect the drivability and safety of the vehicle.
Difficulty
Moderate
System
Electrical Circuit Issue
Tools mentioned
Multimeter, OBD-II scanner, Basic hand tools

This summary uses the existing diagnostic information shown in full below.

Laymans terms

This code means that the car's computer is having trouble getting enough power to control one of the electric motors that help the car move.

Explanation

The code indicates a low voltage condition in the control module supply circuit for Drive Motor 'B'.

Technical description

P1E3A is a diagnostic trouble code that signifies a low voltage condition in the supply circuit of the control module for Drive Motor 'B'. This can affect the performance of the electric motor by not providing sufficient power for its operation.

Symptoms

• Reduced vehicle performance

• Check engine light illuminated

• Unusual noises from the electric motor

Common Causes

• Faulty wiring or connections in the supply circuit

• Failed Drive Motor 'B' control module

• Battery or power supply issues

Glossary

Drive Motor: An electric motor that helps propel the vehicle.

Control Module: A computer that manages the operation of specific vehicle components.

Diagnosis steps

• Check the battery voltage and connections

• Inspect wiring and connectors for damage or corrosion

• Test the Drive Motor 'B' control module for faults

Repair procedures

• Repair or replace damaged wiring or connectors

• Replace the Drive Motor 'B' control module if faulty

• Ensure the battery and power supply are functioning correctly

Tools required

• Multimeter

• OBD-II scanner

• Basic hand tools

Estimated repair cost

$200 - $800

Difficulty level

Moderate

Commonly affected vehicles

• Chevrolet Volt

• Nissan Leaf

• Toyota Prius

Preventive measures

• Regularly inspect and maintain battery terminals

• Check wiring harnesses for wear and tear

• Perform routine diagnostic checks

Error code type

Electrical Circuit Issue

User experience recommendations

• Avoid driving the vehicle until the issue is resolved to prevent further damage.

• Consult with a professional mechanic for a thorough diagnosis.

Warranty information

Check your vehicle's warranty for coverage on electrical components.

Historical data

This code is relatively common in hybrid and electric vehicles, where electric motor control is crucial.

Urgency level

High – This issue can affect the drivability and safety of the vehicle.

Testing conditions

• Vehicle stationary

• Engine running

Component location

The Drive Motor 'B' control module is typically located near the electric motor or within the powertrain control module housing.

FAQs

Q: Can I drive my car with a P1E3A code?
A: It's not recommended as it can affect the vehicle's performance and safety.

Q: How do I reset the P1E3A code?
A: After repairs, use an OBD-II scanner to clear the code, but ensure the issue is resolved first.

Optional diagnostic gear

Tools that may help diagnose P1E3A

THINKCAR ThinkScan Bidirectional diagnostic tool illustration

High-End · Full-system diagnostics

THINKCAR ThinkScan Bidirectional

A full-system bidirectional platform aimed at advanced DIY users and professional diagnostic workflows.

Network faults often require full-system access instead of a generic code reader alone.

View on Amazon
Klein Tools MM325 diagnostic tool illustration

Universal · Digital multimeter

Klein Tools MM325

A solid entry-level multimeter for voltage, continuity, resistance, and basic electrical troubleshooting.

Helpful for checking voltage drops, grounds, and basic circuit health when modules are not communicating.

View on Amazon
WORKPRO Wiring Repair Kit diagnostic tool illustration

Universal · Wire connectors and repair kit

WORKPRO Wiring Repair Kit

Useful when diagnosis points toward damaged wiring, corroded terminals, or connector repairs.

Useful if diagnosis points toward damaged connectors, wiring, or terminal repairs.

View on Amazon

These are optional diagnostic tools, not guaranteed fixes. As an Amazon Associate I earn from qualifying purchases.

Source: ezOBD2 diagnostic database
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