B1963 OBD-II Trouble Code: Seat Horizontal Forward/Rearward Potentiometer Feedback Circuit Open

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Cost of diagnosing the B1963 code

B1963 is a diagnostic trouble code (DTC) for "Seat Horizontal Forward/Rearward Potentiometer Feedback 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. Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $20.00 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.

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B1963 code definition

The B1963 trouble code notes a circuit error from the vehicle’s seat potentiometer.

What the B1963 code means

The B1963 code is a generic OBD-II trouble code that detects a circuit malfunction in the power seat potentiometer. The potentiometer is essentially a position sensor for the power seat system, that sends seat position information (horizontal position information in the case of this code) to the powertrain control module (PCM) or body control module. By relaying this position information, the potentiometer helps prevent conflicting movements. For instance, when a convertible top opens, the seats often must be moved forward to accommodate the top. Before the top is opened, the potentiometer will relay the horizontal seat position information so that the computer knows whether or not to adjust the seat. If the body control module or PCM does not receive input data from the power seat potentiometer, then the B1963 code may be triggered.

What causes the B1963 code?

The B1963 trouble code is commonly caused be two culprits: damaged electrical parts in the power seat and potentiometer system, and a faulty potentiometer. The code can also be the result of a potentiometer that is improperly adjusted, and needs to be reset. While very rare, the code can also be detected because of a faulty PCM or body control module.

What are the symptoms of the B1963 code?

The B1963 trouble code will usually be accompanied by an illuminated check engine soon warning light on the gauge cluster. In most cases, the potentiometer will not work, which could cause problems, especially if you have a convertible. The power seats may also be inoperable, so you may not be able to move them forward or rearward.

How does a mechanic diagnose the B1963 code?

The B1963 code will be diagnosed with an OBD-II trouble code scanner. A reputable mechanic will use the scanner to view the freeze frame data and assess the B1963 code, as well as to check for any additional trouble codes. If multiple codes are present, then they will need to be addressed in the order that the scanner displays them in. The mechanic will then reset the trouble codes, restart the vehicle, and see if the code is still present. If it is not, then an intermittent error, or an erroneous trigger are likely to blame.

If the B1963 code is still detected after the reset, then the mechanic will begin by visually inspecting the electrical components in the system. Any short wires, loose or open connectors, or blown fuses should be replaced. The technician will then inspect the potentiometer to see if it is properly adjusted and functioning.

After any components are repaired or replaced, the technician will reset the trouble codes, restart the vehicle, and again check for the presence of the B1963 code. This will help the mechanic know when the problem is fixed

Common mistakes when diagnosing the B1963 code

The most commonly made error when diagnosing this code is the failure to properly follow the OBD-II trouble code diagnosis protocol. It is very important that the protocol is followed at all times, to help ensure thorough and accurate diagnoses.

Fully operational potentiometers are often unnecessarily replaced because damaged wires and connectors were not identified and repaired.

How serious is the B1963 code?

A vehicle with the B1963 trouble code will still be drivable, and will not have drivability problems. It is likely that the potentiometer will not work, however, which means the driver and passengers will have to be careful to manually adjust any seat that may risk interfering with another body component (for instance the convertible top). In some cases, the power front seats will not be able to be adjusted, which can cause problems depending on the seat position and the height of the driver and passenger.

What repairs can fix the B1963 code?

Repairs for the B1963 code include:

Additional comments for consideration regarding the B1963 code

It is extremely rare for the B1963 trouble code to be caused by a defective PCM or body control module. All possible causes of the code should be inspected before a controller is condemned.

Need help with a B1963 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.

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