AutoCodes – Dodge – P2608 Dodge

P2608 Dodge Code - Intake Air Heater 'B' Circuit High

Quick Answer

The Engine Control Module (ECM) uses an Intake Air Heater (IAH) to warm the incoming air for proper cylinder combustion. Common causes include Faulty Intake Air Heater (IAH) Relay, Faulty Intake Air Heater, Intake Air Heater Relay harness is open or shorted. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P2608 Dodge indicates Intake Air Heater 'B' Circuit High.
Common causes: Common causes include Faulty Intake Air Heater (IAH) Relay, Faulty Intake Air Heater, Intake Air Heater Relay harness is open or shorted.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 3,593

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jan 19, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P2608 Dodge Description

The Engine Control Module (ECM) uses an Intake Air Heater (IAH) to warm the incoming air for proper cylinder combustion. The ECM grounds the control coil of the IAH relay to energize the heater during cold operation. The control module will command the IAH ON when the engine coolant temperature is below 40 C (104 F). The power to the IAH heater is supplied by the battery positive voltage circuit through the IAH relay.

OBDII Code P2608 Dodge - Intake Air Heater 'B' Circuit High - AutoCodes.com — P2608 Dodge Code - Intake Air Heater 'B' Circuit High

What does this mean?

What are the Possible Causes of the DTC P2608 Dodge?

Faulty Intake Air Heater (IAH) Relay
Faulty Intake Air Heater
Intake Air Heater Relay harness is open or shorted
Intake Air Heater Relay circuit poor electrical connection
Intake Air Heater harness is open or shorted
Intake Air Heater circuit poor electrical connection

How to Fix the DTC P2608 Dodge?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P2608 Dodge code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P2608 Dodge Code

1. What are the common symptoms of OBDII code P2608 Dodge (Intake Air Heater 'B' Circuit High)?

- Common symptoms include rough idling, decreased fuel efficiency, and the illumination of the Check Engine Light.

2. What are the possible causes of OBDII code P2608 Dodge?

- Possible causes include a faulty intake air heater relay, damaged wiring or connectors in the intake air heater circuit, or a malfunctioning intake air heater.

3. How can I diagnose the issue related to OBDII code P2608 Dodge?

- Diagnose the issue by visually inspecting the intake air heater circuit for any visible damage, testing the intake air heater relay, and using a multimeter to check for continuity in the circuit.

4. Can I continue driving my vehicle with OBDII code P2608 Dodge?

- It is not recommended to continue driving your vehicle with this code, as it can lead to further damage and potential engine issues.

5. How can I repair OBDII code P2608 Dodge?

- Repair options include replacing the faulty intake air heater relay, repairing any damaged wiring or connectors in the circuit, or replacing the intake air heater itself if it is malfunctioning.

6. Are there any DIY tips for fixing OBDII code P2608 Dodge?

- DIY tips include ensuring all connections in the intake air heater circuit are secure, using a wiring diagram to trace the circuit, and consulting the vehicle's service manual for specific instructions.

7. Can a clogged air filter cause OBDII code P2608 Dodge?

- While a clogged air filter can affect engine performance, it is not a direct cause of this specific OBDII code related to the intake air heater circuit.

8. How long does it typically take to repair OBDII code P2608 Dodge?

- The repair time can vary depending on the exact cause of the code and the expertise of the person performing the repairs, but it can generally be fixed within a few hours.

9. Will resetting the Check Engine Light resolve OBDII code P2608 Dodge?

- Resetting the Check Engine Light may temporarily turn it off, but if the underlying issue causing the code is not addressed, the light will likely reappear once the problem is detected again.

10. Is OBDII code P2608 Dodge a common issue in Dodge vehicles?

- This code is not as common as some other OBDII codes, but it can still occur in Dodge vehicles with intake air heater systems.