ezOBD2 - Free OBD2 Code Lookup and Check Engine Light Diagnostic Tool

Find Your OBD2 Code Fast

Type the code from your scanner to get causes, symptoms, and fixes.

Code P1E42

Quick reference

P1E42 at a glance

Plain-language meaning
This code means that the computer in your car found a problem with the hardware that controls one of the electric motors. It's like when your game console has a hardware issue and can't play games properly.
Urgency
High – This issue can affect vehicle performance and should be addressed promptly.
Difficulty
Difficult
System
Control Module Issue
Tools mentioned
OBD-II scanner, Multimeter, Basic hand tools

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

Laymans terms

This code means that the computer in your car found a problem with the hardware that controls one of the electric motors. It's like when your game console has a hardware issue and can't play games properly.

Explanation

The code P1E42 is triggered when the vehicle's control module detects a malfunction in the hardware of the drive motor 'B' control module.

Technical description

The Drive Motor 'B' Control Module is responsible for managing the operations of one of the vehicle's electric drive motors. A hardware error indicates that there is a fault within the module itself, which could be due to internal component failure or connectivity issues.

Symptoms

• Reduced vehicle performance

• Warning light on the dashboard

• Inability to use electric drive mode

Common Causes

• Faulty Drive Motor 'B' Control Module

• Poor electrical connections

• Damaged wiring or connectors

Glossary

Control Module: A device that controls various functions in a vehicle.

Drive Motor: An electric motor that powers the vehicle.

Diagnosis steps

• Check for any other related codes.

• Inspect the wiring and connections to the control module.

• Test the control module for proper operation.

Repair procedures

• Repair or replace damaged wiring and connectors.

• Replace the Drive Motor 'B' Control Module if faulty.

• Clear the code and test drive the vehicle to ensure the issue is resolved.

Tools required

• OBD-II scanner

• Multimeter

• Basic hand tools

Estimated repair cost

$500 - $1500

Difficulty level

Difficult

Commonly affected vehicles

• Chevrolet Volt

• Cadillac ELR

• Chevrolet Spark EV

Preventive measures

• Regular maintenance checks

• Ensure proper electrical connections

• Avoid exposure to extreme temperatures

Error code type

Control Module Issue

User experience recommendations

• Do not ignore the warning light on the dashboard.

• Schedule a service appointment with a qualified technician.

Warranty information

Check with the vehicle manufacturer for warranty coverage on hybrid components.

Historical data

This code is relatively common in hybrid and electric vehicles where control modules are crucial for motor operation.

Urgency level

High – This issue can affect vehicle performance and should be addressed promptly.

Testing conditions

• Vehicle must be in a safe location.

• Ensure the battery is adequately charged.

Component location

The Drive Motor 'B' Control Module is typically located near the drive motor or within the power electronics compartment.

FAQs

Q: Can I drive with a P1E42 code?
A: It is not recommended to drive with this code as it can affect vehicle performance and may lead to further damage.

Q: How do I reset the P1E42 code?
A: After repairs, you can use an OBD-II scanner to clear the code, but ensure the issue is resolved first.

Optional diagnostic gear

Tools that may help diagnose P1E42

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
🌙