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Code P1E22

Quick reference

P1E22 at a glance

Plain-language meaning
This code means that the car's computer thinks the temperature sensor for part of the electric motor system is giving a reading that doesn't make sense.
Urgency
Moderate – It should be addressed soon to avoid potential damage to the inverter or motor.
Difficulty
Moderate
System
Sensor 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 car's computer thinks the temperature sensor for part of the electric motor system is giving a reading that doesn't make sense.

Explanation

The vehicle's control module has detected an implausible signal from the temperature sensor associated with the Drive Motor 'B' inverter.

Technical description

The P1E22 code indicates that the temperature sensor 'B' for the drive motor 'B' inverter is reporting a temperature value that is not within the expected range or is inconsistent with other sensor readings. This may be due to a faulty sensor, wiring issue, or a problem with the inverter itself.

Symptoms

• Check Engine Light is on

• Reduced vehicle performance

• Unusual temperature readings

Common Causes

• Faulty temperature sensor

• Wiring issues or poor connections

• Faulty inverter

Glossary

Inverter: A device that converts direct current (DC) to alternating current (AC).

Temperature Sensor: A device that measures temperature and sends the data to the vehicle's computer.

Diagnosis steps

• Use an OBD-II scanner to confirm the code.

• Inspect the wiring and connections to the temperature sensor.

• Test the temperature sensor for proper operation.

Repair procedures

• Replace the faulty temperature sensor.

• Repair or replace damaged wiring or connectors.

• Replace the inverter if necessary.

Tools required

• OBD-II scanner

• Multimeter

• Basic hand tools

Estimated repair cost

$200 - $600

Difficulty level

Moderate

Commonly affected vehicles

• Chevrolet Volt

• Chevrolet Bolt

• Cadillac ELR

Preventive measures

• Regular maintenance checks

• Ensure proper cooling system function

• Inspect electrical connections periodically

Error code type

Sensor Issue

User experience recommendations

• Avoid driving the vehicle until the issue is resolved.

• Consult a professional mechanic for accurate diagnosis.

Warranty information

Check vehicle warranty for coverage on electrical components.

Historical data

This code has been reported in hybrid and electric vehicles due to the complexity of their electrical systems.

Urgency level

Moderate – It should be addressed soon to avoid potential damage to the inverter or motor.

Testing conditions

• Vehicle at operating temperature

• Use of diagnostic tools

Component location

The temperature sensor is typically located near the drive motor inverter, often within the engine bay or under the vehicle.

FAQs

Q: Can I drive with the P1E22 code?
A: It's not recommended as it could lead to further damage or reduced performance.

Q: How do I know if the temperature sensor is faulty?
A: A diagnostic test using a multimeter can help determine if the sensor is working correctly.

Optional diagnostic gear

Tools that may help diagnose P1E22

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.

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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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