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Code P1E16

Quick reference

P1E16 at a glance

Plain-language meaning
This code means that there is a problem with the electrical circuit that helps control one of the car's electric motors. It's like when a toy car doesn't move because its battery wires are loose.
Urgency
High – This issue can affect vehicle performance and safety, requiring immediate attention.
Difficulty
Difficult
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 there is a problem with the electrical circuit that helps control one of the car's electric motors. It's like when a toy car doesn't move because its battery wires are loose.

Explanation

The P1E16 code indicates an issue with the electrical circuit for the 'B' phase of the drive motor, which is responsible for helping the car move. The circuit might be open, shorted, or have a poor connection.

Technical description

The P1E16 code is triggered when the Powertrain Control Module (PCM) detects an issue with the electrical circuit of the drive motor 'B' phase U V-W. This could be due to an open circuit, short to ground, short to voltage, or poor connection in the motor's phase wiring.

Symptoms

• Reduced vehicle performance

• Warning light on the dashboard

• Unusual noises from the motor

Common Causes

• Faulty drive motor

• Damaged wiring or connectors

• Faulty Powertrain Control Module (PCM)

Glossary

PCM: Powertrain Control Module

OBD-II: On-Board Diagnostics II

Drive Motor: An electric motor that helps propel the vehicle

Diagnosis steps

• Perform a visual inspection of the drive motor wiring and connectors.

• Use a multimeter to check for continuity and shorts in the circuit.

• Check the PCM for any additional error codes.

Repair procedures

• Repair or replace damaged wiring or connectors.

• Replace the faulty drive motor if necessary.

• Reprogram or replace the PCM if needed.

Tools required

• Multimeter

• OBD-II scanner

• Basic hand tools

Estimated repair cost

$300 - $1500

Difficulty level

Difficult

Commonly affected vehicles

• Chevrolet Volt

• Chevrolet Bolt EV

• Cadillac ELR

Preventive measures

• Regularly inspect and maintain wiring and connectors.

• Ensure the vehicle's electrical system is in good condition.

• Follow the manufacturer's maintenance schedule.

Error code type

Electrical Circuit Issue

User experience recommendations

• Do not ignore warning lights on the dashboard.

• Have the vehicle inspected by a professional if you notice performance issues.

• Consider regular maintenance checks to prevent such issues.

Warranty information

Check with the vehicle manufacturer for warranty coverage on the drive motor and related components.

Historical data

This code is commonly associated with hybrid and electric vehicles, where electric motor control is critical.

Urgency level

High – This issue can affect vehicle performance and safety, requiring immediate attention.

Testing conditions

• Vehicle stationary

• Ignition on, engine off

Component location

The drive motor and its circuits are typically located near the vehicle's powertrain, often in the engine bay or undercarriage.

FAQs

Q: Can I drive my car with a P1E16 code?
A: It's not recommended to drive with this code active, as it may affect vehicle performance and safety.

Q: How do I clear a P1E16 code?
A: After repairs, use an OBD-II scanner to clear the code. If the issue persists, the code will reappear.

Optional diagnostic gear

Tools that may help diagnose P1E16

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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