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Code P06E5

Quick reference

P06E5 at a glance

Plain-language meaning
This code means that the part of the car that helps it start in cold weather isn't working as well as it should.
Urgency
Moderate – Addressing this issue is important to ensure reliable starting and prevent further engine wear.
Difficulty
Moderate
System
Engine Performance
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 part of the car that helps it start in cold weather isn't working as well as it should.

Explanation

The P06E5 code indicates a performance issue with the glow plug control module, which is responsible for heating the glow plugs in a diesel engine to aid in cold starts.

Technical description

The Glow Plug Control Module 1 is responsible for managing the operation of the glow plugs in a diesel engine. If the module is not performing correctly, it can lead to difficulties in starting the engine, especially in cold conditions. This code is set when the Engine Control Module (ECM) detects a performance issue with the glow plug control module.

Symptoms

• Hard starting in cold weather

• Check Engine Light illuminated

• Rough idle after start-up

Common Causes

• Faulty glow plug control module

• Wiring issues or poor connections

• Failed glow plugs

Glossary

Glow Plug: A device used to heat the air in a diesel engine to aid in starting.

Control Module: An electronic device that manages specific functions in a vehicle.

Diagnosis steps

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

• Inspect the glow plug control module and its wiring for damage or corrosion.

• Test the glow plugs for proper resistance.

Repair procedures

• Replace the glow plug control module if faulty.

• Repair or replace damaged wiring or connectors.

• Replace any failed glow plugs.

Tools required

• OBD-II scanner

• Multimeter

• Basic hand tools

Estimated repair cost

$200 - $600

Difficulty level

Moderate

Commonly affected vehicles

• Ford F-250

• Chevrolet Silverado 2500

• Dodge Ram 2500

Preventive measures

• Regularly inspect glow plug system components.

• Ensure all electrical connections are clean and secure.

• Use high-quality glow plugs and control modules.

Error code type

Engine Performance

User experience recommendations

• Have the vehicle inspected by a professional if you experience hard starting.

• Avoid prolonged cranking of the engine in cold weather.

Warranty information

Check with the vehicle manufacturer for warranty coverage on emissions-related components.

Historical data

This code has been commonly reported in diesel engines experiencing cold start issues, particularly in colder climates.

Urgency level

Moderate – Addressing this issue is important to ensure reliable starting and prevent further engine wear.

Testing conditions

• Vehicle parked overnight in cold conditions.

• Engine at ambient temperature.

Component location

The glow plug control module is typically located near the engine, often mounted on the firewall or engine block.

FAQs

Q: What happens if I ignore this code?
A: Ignoring this code can lead to hard starting issues and potential engine damage over time.

Q: Can I drive with this code?
A: While the vehicle may still be drivable, it is recommended to address the issue to avoid starting problems and potential engine damage.

Optional diagnostic gear

Tools that may help diagnose P06E5

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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