B1289 OBD-II Trouble Code: Servo Motor Potentiometer Air Intake Right Circuit Open

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

Red-stars EXCELLENT RATING ON

Cost of diagnosing the B1289 code

B1289 is a diagnostic trouble code (DTC) for "Servo Motor Potentiometer Air Intake Right Circuit Open". 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 B1289 DIAGNOSTIC Get a fair and transparent estimate upfront

B1289 code definition

The B1289 trouble code notes an error with the servo motor potentiometer air intake right circuit.

What the B1289 code means

The B1289 code is a generic OBD-II trouble code that suggests an issue with the servo motor potentiometer air intake circuit on the right side (the system has two interior air intake systems, a “left” one and a “right” one). The potentiometer is a voltage divider, which allows the interior air intake system to be adjustable, rather than just having an on or off switch. If a circuit malfunction is detected with the servo motor potentiometer air intake right, then the B1289 trouble code will be triggered.

What causes the B1289 code?

The B1289 trouble code can be the result of a few different things:

What are the symptoms of the B1289 code?

The B1289 trouble code may be accompanied by a blinking A/C light on the climate controls, or possibly an illuminated check engine soon Warning Light. It is very likely that the climate control system will not operate properly.

How does a mechanic diagnose the B1289 code?

The B1289 code will be diagnosed with an OBD-II trouble code scanner. A certified technician will use the scanner to view the freeze frame data for the B1289 code, and check for any additional trouble codes that are present. If there are multiple codes detected, then they should be diagnosed in the order in which they appear. The trouble codes will then be reset and the vehicle restarted, so the mechanic can see if the code remains detected. If the code is no longer present, then it likely represents an intermittent error, or was the result of an erroneous detection.

If the code remains detected, then the technician will begin by visually inspecting the electrical components. Any wires, connectors, or fuses that are damaged or defective will need to be replaced. The servo motor and potentiometer will then be inspected, and replaced if they are faulty.

Any time the mechanic replaces or repairs a component, the trouble codes will need to be reset, the car restarted, and the B1289 code checked for again. This will allow the mechanic to know as soon as the problem causing the code has been identified and repaired.

Common mistakes when diagnosing the B1289 code

The most common mistake when diagnosing the B1289 code is the failure to properly follow the OBD-II trouble code diagnosis protocol. The protocol should also be complied with, as it helps guarantee that diagnoses and repairs are accurate and efficient.

It is fairly common for damaged electrical components to be overlooked, and fully operational potentiometers and servo motors to be erroneously replaced.

How serious is the B1289 code?

The B1289 trouble code will not keep a car from being drivable, or present any drivability problems. However, the climate control system may not operate properly. As with all trouble codes, it’s important to have the vehicle inspected when the B1289 code is detected.

What repairs can fix the B1289 code?

Some potential repairs for the B1289 trouble code are:

  • Servo motor replacement
  • Potentiometer replacement
  • Replacement of wires, connectors, and fuses
  • In rare cases, replacement of the PCM, body control module, or climate control module

Additional comments for consideration regarding the B1289 code

It is highly unlikely that the B1289 trouble code is the result of a defective PCM, body control module, or climate control module. All potential causes of the code should be thoroughly checked for before any control module is condemned. If a controller does end up needing to be replaced, the mechanic will also need to reprogram it.

Need help with a B1289 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.

OBD-II
trouble codes
B1289

No more waiting rooms! Our mechanics will come to you to diagnose and fix the B1289 code.

SCHEDULE B1289 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

P0542 OBD-II Trouble Code: Intake Air Heater "A" Circuit High
P0542 trouble code means that there is an issue with the intake air heater “A” circuit high often due to faulty intake air relay or poor wiring
P0732 OBD-II Trouble Code: Gear 2 Incorrect Ratio
P0732 code identifies an issue with the vehicles automatic transmission often due too low transmission fluid or broken/faulty PCM.
P000B OBD-II Trouble Code: “B” Camshaft Position Slow Response
P000B means that the ECM has detected a fault with the position and timing of the camshaft due to a loose fuel cap, or low oil pressure.

Related questions

While highway driving, car stopped accelerating & became inoperative
This message indicates there is a problem in the anti-lock braking and/or electronic stability program system. If the problem is severe enough, the vehicle will go into limp mode, as you experienced. The root cause could be anything from a...
Problem with Check Engine light in my dashboard.
Hi and thanks for your question. The code P0139 means that the secondary oxygen sensor on bank 1 (the sensor after the catalytic converter) is not damaged, but rather the engine air fuel ratio is not being adjusted by the...
Car cranks over but won't start - 2004 Nissan Sentra
If the fuel pump is not "whirring" momentarily when you turn the key "on", either the pump is not receiving power or it's non-functional. You might try probing the fuel pump harness for 12 volts at moment key is turned...

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