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 P0E27

Quick reference

P0E27 at a glance

Plain-language meaning
This code means that the car's computer is having trouble getting a steady reading from a sensor that checks how hot a part of the electric motor system is. It's like when a thermometer keeps giving different temperatures even though it's in the same place.
Urgency
High – This issue can affect the vehicle's performance and potentially lead to more serious damage if not addressed.
Difficulty
Moderate
System
Sensor Issue
Tools mentioned
OBD-II scanner, Multimeter, Basic hand tools (screwdrivers, pliers)

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 a steady reading from a sensor that checks how hot a part of the electric motor system is. It's like when a thermometer keeps giving different temperatures even though it's in the same place.

Explanation

The P0E27 code is triggered when the vehicle's control module detects an inconsistent or erratic signal from the drive motor inverter temperature sensor G. This sensor monitors the temperature of the inverter, which is crucial for the electric motor's operation.

Technical description

The drive motor inverter temperature sensor G is responsible for monitoring the temperature of the inverter, which converts DC to AC power for the electric motor. An intermittent or erratic signal from this sensor can indicate wiring issues, sensor failure, or problems with the inverter itself.

Symptoms

• Check Engine Light (CEL) illuminated

• Possible reduced power or performance

• Unusual noises from the electric motor area

• Vehicle may enter a limp mode to prevent damage

Common Causes

• Faulty drive motor inverter temperature sensor

• Wiring or connection issues in the sensor circuit

• Malfunctioning inverter

• Corrosion or damage to electrical connectors

Glossary

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

Sensor: A device that detects or measures a physical property and records, indicates, or otherwise responds to it.

Diagnosis steps

• Use an OBD-II scanner to confirm the code and check for other related codes.

• Inspect the wiring and connectors for the drive motor inverter temperature sensor G for damage or corrosion.

• Test the sensor with a multimeter to ensure it's functioning correctly.

• Inspect the inverter for any signs of overheating or damage.

Repair procedures

• Replace the drive motor inverter temperature sensor if faulty.

• Repair or replace any damaged wiring or connectors.

• Test and possibly replace the inverter if it is malfunctioning.

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

Tools required

• OBD-II scanner

• Multimeter

• Basic hand tools (screwdrivers, pliers)

Estimated repair cost

$150 - $500, depending on the specific issue and labor costs

Difficulty level

Moderate

Commonly affected vehicles

• Toyota Prius

• Chevrolet Volt

• Nissan Leaf

Preventive measures

• Regular maintenance checks of the vehicle's electrical system

• Keeping the inverter and its components clean and free from debris

• Ensuring all electrical connections are secure and free from corrosion

Error code type

Sensor Issue

User experience recommendations

• Do not ignore the Check Engine Light; get the vehicle checked promptly.

• Avoid driving the vehicle until the issue is diagnosed and repaired to prevent further damage.

Warranty information

Check with your vehicle manufacturer as some components may be covered under warranty, especially if the vehicle is relatively new.

Historical data

This code is relatively common in hybrid and electric vehicles where precise temperature control of the inverter is crucial for performance and safety.

Urgency level

High – This issue can affect the vehicle's performance and potentially lead to more serious damage if not addressed.

Testing conditions

• Ensure the vehicle is in a safe, stationary position.

• The engine should be off and cool before inspecting electrical components.

Component location

The drive motor inverter temperature sensor is typically located near the inverter assembly, which is often found in the engine bay of hybrid and electric vehicles.

FAQs

Q: Can I drive with a P0E27 code?
A: It's not recommended to drive with this code as it can lead to reduced performance and potential damage to the vehicle.

Q: How do I reset the P0E27 code?
A: After repairing the issue, you can use an OBD-II scanner to clear the code. However, if the issue persists, the code will return.

Optional diagnostic gear

Tools that may help diagnose P0E27

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
🌙