P2607 OBD-II Trouble Code: Intake Air Heater 'B' Circulation Low

Our certified mechanics come to you · Get a fair and transparent estimate upfront

Red-stars EXCELLENT RATING ON

Cost of diagnosing the P2607 code

P2607 is a diagnostic trouble code (DTC) for "Intake Air Heater 'B' Circulation Low". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic for $114.99 . Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $20.0 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.

Cars Estimate Credit towards follow-up repair Earliest Availability
Ford $114.99 $20.0
Toyota $114.99 $20.0
BMW $124.99 $20.0
SCHEDULE P2607 DIAGNOSTIC Get a fair and transparent estimate upfront

P2607 code definition

The P2607 trouble code is a generic powertrain code related to computer circuit output issues. Your vehicle’s engine control module (ECM) is receiving a notification that the second intake air heater (heater B or 2) is presenting a low voltage reading or is exceeding the manufacturer’s allowed variances.

The P2607 code is also related to:

What the P2607 Code Means

When a P2607 code comes up, your vehicle’s air intake heater B (number 2 intake heater circuit) is not receiving the correct voltage. An intake air heater system works to warm the cooler air coming into the intake system.

The resistance between the signal and return posts of the air intake heater relay should be between 15 and 25 ohms. The resistance of the air intake heater relay signal circuit between the vehicle’s ECM and the intake air heater relay connector should have a resistance less than 10 ohms. If the ECM detects resistance levels lower than these readings, a P2607 code will appear.

What Causes the P2607 code?

  • Damaged or defective intake heater relays located on the passenger side of the battery tray
  • Loose or damaged electrical wires, including damage due to battery acid corrosion.
  • Damaged or defective intake air heater blower
  • Damaged, loose, or defective intake air temperature sensors
  • Damaged, defective, or burned out heater element
  • In rare cases, a damaged or defective ECM

What are the Symptoms of the P2607 Code?

Symptoms of a P2607 trouble code may include:

  • Vehicle warning or Check Engine Light may illuminate, with no other symptoms present
  • Vehicle may fail a smog test
  • Vehicle may stall or shake at idle

How Does a Mechanic Diagnose the P2607 Code?

To diagnose a P2607 code, a mechanic may do one or more of the following:

  • Use an OBD-II scanner to check for a stored P2607 trouble code

  • Perform a visual inspection

  • Check for damaged or defective wires

  • Check battery wires for damage or loose connections

  • Check for any loose electrical connectors or bent pins

  • Check for any grounded wires

  • Connect vehicle to scanner and check if the ECM is commanding the intake air heater to turn on

  • Listen to hear if the blower is working

  • Locate heater element and use an infrared thermometer to check if it is warming

  • Measure resistance between signal and return posts of the intake air heater relay

  • Measure resistance of the intake air heater relay signal circuit between the vehicle’s ECM connector and the intake air heater relay connector

  • Measure the voltage between the signal circuit of the intake air heater and battery negative

  • Check circuit continuity

  • Clear the code and test drive the vehicle to see it reappears (with some makes and models, it requires a few drive cycles with a failure to turn on a warning light)

  • Note: Some vehicle models will allow the mechanic to turn a vehicle’s air intake heater on and off, which is helpful for testing this issue after an engine is warm.

How Serious is the P2607 Code?

Because the vehicle may not show any symptoms for this code except a warning light or failed smog test, but could potentially stall or hesitate at idle causing dangerous driving conditions, YourMechanic considers the P2607 code serious and recommends to take your vehicle to your local service center or mechanic immediately for diagnosis and repair.

What Repairs can Fix the P2607 Code?

  • Replace or repair any damaged or defective wires
  • Replace or repair any damaged or loose connections in the battery wires
  • Replace or repair damaged battery cable
  • Replace or repair a damaged or defective air intake heater B (or number 2) relay
  • Repair the air intake heater ground
  • Replace or repair any damaged or defective temperature sensors
  • Replace or repair any loose electrical connectors or bent pins
  • Replace or repair any grounded wires
  • Replace a damaged or defective heater element
  • Repair or replace damaged or defective intake air heater B
  • Repair or replace a defective or faulty ECM
  • Clear the code and test drive the vehicle to see it reappears (with some makes and models, it requires a few drive cycles with a failure to turn on a warning light)

Need Help with a P2607 Code?

YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. Get a quote and book an appointment online or speak to a service advisor at 1-800-701-6230.

Check Engine Light
trouble codes
P2607

No more waiting rooms! Our mechanics will come to you to diagnose and fix the P2607 code.

SCHEDULE P2607 DIAGNOSTIC
Get a $20 credit for the follow-up repair

Recent Check Engine Light is on Inspection reviews

Excellent Rating

(7400)

Rating Summary
6879
249
58
41
173
6879
249
58
41
173
 at YourMechanic

David

13 years of experience
393 reviews
David
13 years of experience
Chevrolet Malibu L4-2.4L - Check Engine Light is on Inspection - Marietta, Georgia
He explained everything to me in detail on what I needed to know about my car. Definitely recommend him for getting the job done.
 at YourMechanic

Raymond

37 years of experience
402 reviews
Raymond
37 years of experience
Toyota Camry L4-2.2L - Check Engine Light is on - Las Vegas, Nevada
Raymond did a great job however I was charged for two hours labor and he was only here less than 45 minutes. should I expect this on future appointments with your mechanic ?
 at YourMechanic

Shane

17 years of experience
217 reviews
Shane
17 years of experience
Volkswagen EuroVan V6-2.8L - Check Engine Light is on Inspection - Austin, Texas
Arrived on time. Explained the issues he found and how he will fix it. I have parts on order and will schedule an appointment to have Shane install the parts when they arrive.
 at YourMechanic

Kanstantsin

19 years of experience
51 reviews
Kanstantsin
19 years of experience
Ford F-150 V8-4.6L - Check Engine Light is on Inspection - Littleton, Colorado
Kanstantsin arrived early. Was very courteous and professional. Will highly recommend to anyone. Thank you Kanstantsin.


More related articles

P0413 OBD-II Trouble Code: Secondary Air Injection System Switching Valve A Circuit Open
P0413 means theres a issue with the vehicle’s air injection system due to faulty air injection pump, faulty wiring or faulty air bypass solenoid.
P3473 OBD-II Trouble Code: Cylinder 10 Deactivation/Intake Valve Control Circuit/Open
P3473 means a cylinder was deactivated during certain driving conditions due to low oil pressure, faulty cylinder, or restricted oil passage.
P2616 OBD-II Trouble Code: Camshaft Pos Signal Output Circuit High
P2616 means the camshaft position sensor has released a high output signal due to a faulty, broken or shorted wiring, or fluid contamination.

Related questions

Check Engine light on
The wrench light is a maintenance indicator. It illuminates whenever your vehicle is due for a timed maintenance. The check engine light could be several hundred issues. A qualified technician such as one from YourMechanic can retrieve engine codes and...
Check engine light keeps coming back on
Hello. I would need to know the exact codes to be able to give good information about this. If you have a reoccurring misfire code, then a compression test needs to be done to see if there is an internal...
Fuel injection issue - 2005 Buick LaCrosse
Hi there. Your vehicle has a sequential fuel injection system. When the computer detects a fault, it converts to port fuel injection (bank to bank/limp mode). The most likely cause could be an electrical short in the odd bank of...

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1 (855) 347-2779 · hi@yourmechanic.com