AutoCodes – Dodge – P2605 Dodge

P2605 Dodge Code - Intake Air Heater 'B' Circuit/Open

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
P2605 Dodge indicates Intake Air Heater 'B' Circuit/Open.
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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 3,200
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jan 19, 2019
πŸ’¬ Need more help? Ask Coddy for instant answers β€” it's free!

Code P2605 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 P2605 Dodge - Intake Air Heater 'B' Circuit/Open - AutoCodes.com
P2605 Dodge Code - Intake Air Heater 'B' Circuit/Open

What are the Possible Causes of the DTC P2605 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 P2605 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 P2605 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.

Need more information about the P2605 Dodge code?

Need more information on how to fix the P2605 Dodge code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P2605 Dodge code diagnosed by a professional: Find a repair shop in your area

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 P2605 Dodge Code

1. What are the common symptoms of OBDII code P2605 in a Dodge related to the Intake Air Heater 'B' Circuit/Open?

- Common symptoms include difficulty starting the engine, reduced engine performance, and the illumination of the check engine light.

2. What are the possible causes of OBDII code P2605 indicating an Intake Air Heater 'B' Circuit/Open in a Dodge?

- The code may be triggered by a faulty intake air heater, damaged wiring or connectors in the intake air heater circuit, or a failed intake air heater relay.

3. How can I diagnose the Intake Air Heater 'B' Circuit/Open issue causing OBDII code P2605 in my Dodge?

- Diagnose the issue by inspecting the intake air heater system components, checking the wiring and connections for damage, and testing the intake air heater relay for proper functionality.

4. Can I continue driving my Dodge with OBDII code P2605 related to the Intake Air Heater 'B' Circuit/Open?

- It is not recommended to continue driving the vehicle with this code present, as it can lead to reduced engine performance and potential long-term damage if left unresolved.

5. What are some repair tips for fixing OBDII code P2605 associated with the Intake Air Heater 'B' Circuit/Open in a Dodge?

- Repair tips include replacing the faulty intake air heater, repairing or replacing damaged wiring and connectors, and testing or replacing the intake air heater relay if needed.

6. Will resetting the check engine light resolve OBDII code P2605 caused by an Intake Air Heater 'B' Circuit/Open in a Dodge?

- Simply resetting the check engine light will not fix the underlying issue triggering the code. It is important to diagnose and repair the root cause of the problem to prevent the code from reoccurring.

7. How much does it typically cost to repair OBDII code P2605 related to the Intake Air Heater 'B' Circuit/Open in a Dodge?

- The cost of repair can vary depending on the specific issue causing the code, but it may involve parts replacement, wiring repairs, and labor costs, which could range from $100 to $500 or more.

8. Can extreme weather conditions impact the likelihood of triggering OBDII code P2605 for the Intake Air Heater 'B' Circuit/Open in a Dodge?

- Yes, extreme cold temperatures can put additional strain on the intake air heater system, increasing the chances of triggering the code due to the heater struggling to warm the incoming air.

9. Are there any preventive measures to avoid encountering OBDII code P2605 related to the Intake Air Heater 'B' Circuit/Open in a Dodge?

- Regular maintenance checks, including inspecting the intake air heater system components and addressing any issues promptly, can help prevent the occurrence of this code.

10. Is it possible to temporarily bypass or disable the intake air heater to clear OBDII code P2605 in a Dodge?

- While it may be possible to bypass or disable the intake air heater temporarily, it is not recommended as a long-term solution, as it can impact engine performance and fuel efficiency.

Discuss the causes and fixes for P2605 Dodge OBDII Code

Code P2605 Dodge comments

No comments found for this page.

AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play