Skip the auto shop - Our mechanics make house calls

B1955 OBD-II Trouble Code: Seat Front Up/Down Potentiometer Feedback Circuit Open

diagnostic check engine light

B1954 code definition

A B1954 trouble code indicates that the vehicle's Engine Control Unit (ECU) has detected a circuit failure related to one of the front seat's seat potentiometers.

What the B1954 code means

The seat potentiometer is a small black box, located underneath the seats of modern vehicles. It feeds data to the Engine Control Unit (ECU) regarding the seat's relative position in the vehicle, allowing to failsafe against potential conflicts with other car features, such as a convertible roof. If a seat potentiometer circuit has failed, it will rob the ECU of this information. This can result in the seat position freezing (if it's moved electronically) and will disable seat placement failsafes in the vehicle.

What causes the B1954 code?

If the circuit has failed, a faulty seat potentiometer is the most common offender. Broken, disconnected and/or faulty wiring is another potential cause for this issue. The vehicle's Engine Control Unit (ECU) may be reporting the B1952 code incorrectly in some rare circumstances. If the ECU is diagnosed as faulty, it will be due for replacing or reprogramming.

What are the symptoms of the B1954 code?

If a seat potentiometer system isn't working, there's a risk of conflict between the seat and other car features, such as a retractable roof. In some cases, the seat may even be locked in place until the code is fixed. In addition, a stored B1954 trouble code and illuminated check engine light will be present in the event of this code. These will be active for the helpful sake of accurately diagnosing the issue.

How does a mechanic diagnose the B1954 code?

A B1954 trouble code may be first diagnosed by scanning the vehicle with an OBD-II code scanner. The seat potentiometer circuit may be accessed by prying open the seat's side panel. Check the seat potentiometer for signs of fault or damage. All wiring related to the seat potentiometer in question should be inspected thoroughly for signs of wear, damage, disconnection or faultiness.

Common mistakes when diagnosing the B1954 code

Body-related trouble codes describe different problems depending on the specific make and model of vehicle in question. Make sure you are interpreting the trouble code correctly before moving on with any repairs.

How serious is the B1954 code?

A B1954 code should not have a significant impact on a vehicle's drivability, unless it has been cited alongside other, more problematic codes. If the convertible roof's contact failsafe is merely disabled, it can be worked around provided manual care is taken to ensure different parts don't conflict with each other. If the seat position is frozen however, it may cause drivability issues depending on where the seat has been locked.

What repairs can fix the B1954 code?

The seat potentiometer should be replaced if tests have determined it to be faulty. Any wiring or electrical components related to the seat pot circuit that have been detected as problematic should be repaired or replaced as well. Following any repairs made to fix the B1954 code, the vehicle should be tested again. When the car is turned on, a still-broken seat potentiometer will report the code again. This will allow you to tell whether or not the issue has been properly solved.

Additional comments for consideration regarding the B1954 code

A seat potentiometer is commonly referred to by mechanics as a "seat pot".

Need help with a B1954 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.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
Icon-warranty_badge-02

Skip the repair shop, our top-rated mechanics come to you.

At your home or office

Choose from 600+ repair, maintenance & diagnostic services. Our top-rated mechanics bring all parts & tools to your location.

Fair & transparent pricing

See labor & parts costs upfront, so you can book with confidence.

12-month, 12,000-mile warranty

Our services are backed by a 12-month, 12,000-mile warranty for your peace of mind.

Get A Quote

Need Help With Your Car?

Our certified mobile mechanics make house calls in over 2,000 U.S. cities. Fast, free online quotes for your car repair.

GET A QUOTE

More related articles

P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
How to Transfer a Car Title in Idaho
In order to prove ownership of a car, you must have the title. However, when a car is sold, given away or inherited, the title needs...
Veteran and Military Driver Laws and Benefits in New Mexico
The state of New Mexico offers a number of benefits and perks for those Americans who have either served in an Armed Forces branch...


Related questions

Q: My car jerks slightly when I'm at a steady speed or trying to stay at a constant speed only around 40mph to 50 mph

In the future, please include the codes as they can help use pinpoint and give you a more accurate answer. The surging you feel while under light throttle, which is what is happening at a cruise, is due to...

Q: OBD support

Hey there. If you have the OBD-2 connector under the dash directly under the steering column, then the ELM327 will work to scan the vehicle after you download the app. I can tell you that this adapter is very cheaply...

Q: My speedometer is going back and fourth and drops to zero while driving but, my rpm gauge is fine.

Hello. The crankshaft position sensor will not cause a fluctuation in the speedometer gauge. It can affect the rpm gauge, but not the speedometer. If the speedometer is acting like this then most of the time this is caused by...