Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that the computer in the car thinks there's a problem with the little heater (glow plug) for cylinder number 12. It's like when a toaster doesn't heat up properly.
The P06E2 code is triggered when the Engine Control Module (ECM) detects a low voltage or open circuit in the glow plug control circuit for cylinder 12.
The glow plug is a heating device used to aid starting diesel engines. The ECM monitors the voltage and current in the glow plug circuit. If it detects a lower than expected voltage, it sets the P06E2 code, indicating a potential issue with the glow plug or its circuit.
• Engine hard to start
• Rough idle
• Check Engine Light illuminated
• Faulty glow plug
• Damaged wiring or connectors
• Faulty glow plug control module
Glow Plug: A device used to heat the cylinder in a diesel engine to aid starting.
ECM: Engine Control Module, the computer that controls engine functions.
• Check for any additional codes and address them first.
• Inspect the glow plug and wiring for damage.
• Test the glow plug with a multimeter to ensure it is functioning properly.
• Replace the faulty glow plug.
• Repair or replace damaged wiring or connectors.
• Replace the glow plug control module if necessary.
• Multimeter
• Socket set
• Screwdriver
$100 - $300
Moderate
• Ford F-250
• Chevrolet Silverado
• Dodge Ram 2500
• Regular maintenance checks
• Ensure proper electrical connections
• Use high-quality glow plugs
Sensor Issue
• Have the vehicle inspected by a professional if the Check Engine Light comes on.
• Avoid prolonged idling in cold weather without proper glow plug function.
Check your vehicle's warranty for coverage on engine components.
Glow plug issues are common in diesel engines, especially in colder climates where they are used more frequently.
Moderate – It can affect starting and engine performance, especially in cold weather.
Driving with a malfunctioning glow plug can lead to increased emissions and potential engine damage.
• Engine cold start
• Ambient temperature below 40°F
The glow plug for cylinder 12 is located in the engine's cylinder head, typically on the passenger side of the engine.
Q: Can I drive with a P06E2 code?
A: It's possible to drive with this code, but it may be difficult to start the engine, especially in cold weather.
Q: How do I know if my glow plug is bad?
A: Symptoms include hard starting, rough idle, and the Check Engine Light being on.
High-End · Full-system diagnostics
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
Universal · Digital multimeter
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
Universal · Wire connectors and 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 AmazonThese are optional diagnostic tools, not guaranteed fixes. As an Amazon Associate I earn from qualifying purchases.