Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means there's a problem with the part of the car that helps warm up the air going into the engine. It's like when your heater at home doesn't work right.
The code P2606 indicates that the vehicle's computer has detected an issue with the intake air heater circuit, which is responsible for warming the air entering the engine.
The intake air heater is used in diesel engines to warm up the air before it enters the combustion chamber. This is crucial for cold starts and efficient combustion. The 'B' circuit refers to a specific part of the heater circuit. A range/performance issue suggests that the heater is not operating within the expected parameters set by the manufacturer.
• Difficulty starting the engine in cold weather
• Check Engine Light illuminated
• Reduced engine performance
• Faulty intake air heater
• Damaged wiring or connectors
• Faulty intake air heater relay
Intake Air Heater: A device that warms the air entering the engine, primarily in diesel engines.
Relay: An electrical component that opens or closes circuits electronically or electromechanically.
• Check the vehicle's battery and charging system for proper voltage.
• Inspect the intake air heater and its wiring for damage or corrosion.
• Test the intake air heater relay for proper operation.
• Replace the intake air heater if it is faulty.
• Repair or replace damaged wiring or connectors.
• Replace the intake air heater relay if it is not functioning correctly.
• Multimeter
• OBD-II scanner
• Basic hand tools
$150 - $500
Moderate
• Ford F-Series
• Chevrolet Silverado
• Dodge Ram
• Regularly inspect and maintain the air intake system.
• Ensure proper battery maintenance.
• Check for corrosion on electrical connectors.
Engine Performance
• If you notice the engine is hard to start in cold weather, get it checked.
• Regular maintenance can prevent this issue.
Check with your vehicle manufacturer as this may be covered under emissions or powertrain warranty.
This code has been more common in diesel engines used in colder climates due to the increased need for intake air heating.
Moderate – It should be addressed soon to avoid starting issues and ensure optimal engine performance.
Driving with this issue may lead to increased emissions and potential engine performance problems.
• Cold weather conditions
• Engine off and cooled down
The intake air heater is typically located in the air intake system, near the engine.
Q: Can I drive with a P2606 code?
A: You can drive with this code, but it's best to fix it soon to avoid starting problems.
Q: What happens if I don't fix the intake air heater?
A: You may experience difficulty starting the engine in cold weather and reduced engine performance.
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