P2606 Fault Code

Intake Air Heater B Circuit Range/Performance

• What does that mean?
• Symptoms
• Causes
• Solutions

The P2606 fault code indicates an issue with the Intake Air Heater B circuit's performance or range. This component is vital in ensuring that the intake air is heated to the optimal temperature for improved combustion in colder conditions. When this code triggers, it often signifies that the heater is not functioning as expected, which can lead to various engine performance issues.

What are the symptoms of the P2606 code?

Drivers may experience various symptoms when the P2606 code is present, such as:

• Difficulty starting the engine in cold weather
• Reduced engine efficiency and power output
• Poor fuel economy due to improper air heating
• Engine stalling or misfiring, particularly in lower temperature conditions
• Check Engine Light illuminated on the dashboard.

What causes the P2606 code?

Several factors can lead to a P2606 code, including:

• Failed intake air heater element
• Short or open wiring in the intake air heater circuit
• Faulty engine control module (ECM) that cannot correctly control the heater
• Poor electrical connections or corroded terminals affecting circuit performance
• Issues with surrounding components that may influence the heater's operation.

How to fix P2606?

To resolve a P2606 code, follow these steps:

• Use an OBD-II scanner to confirm the code and check for any related trouble codes.
• Inspect the intake air heater circuit for signs of damage, such as frayed wires or loose connections.
• Test the intake air heater element using a multimeter to ensure it functions properly.
• Repair or replace any faulty components as needed, including the heater element or damaged wiring.
• Clear the trouble codes and take the vehicle for a test drive to verify that the issue has been resolved.