B1973 OBD-II Trouble Code: Passenger Rear Seat Down Switch Circuit Short to Battery

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

Red-stars EXCELLENT RATING ON

Cost of diagnosing the B1973 code

B1973 is a diagnostic trouble code (DTC) for "Passenger Rear Seat Down Switch Circuit Short to Battery". 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 B1973 DIAGNOSTIC Get a fair and transparent estimate upfront

B1973 code definition

The B1973 trouble code signals a passenger rear seat down switch circuit malfunction.

What the B1973 code means

The B1973 code is a standard OBD-II trouble code that detects an error from the passenger rear seat down switch circuit. This switch is generally located on the outboard side of the passenger seat, and is used to control the vertical movement of the front passenger seat cushion. When pressed, the rear part of the seat cushion will be lowered to adjust the angle of the seat for the passenger. If a circuit error from the passenger rear seat down switch is detected by either the body control module or the powertrain control module (PCM), then the B1973 trouble code is likely to be stored.

What causes the B1973 code?

There are two likely causes of the B1973 trouble code. The first is damaged electrical parts, such as wires, connectors, and fuses. These parts can be in either the passenger rear seat down switch or the power seat system. The second likely cause is a malfunctioning passenger rear seat down switch. While much less common, the code can also be triggered due to a defective body control module.

What are the symptoms of the B1973 code?

When the B1973 trouble code is stored, the front passenger rear seat down switch will likely be inoperable, which means the back of the seat cushion cannot be adjusted down, and likely up as well. It is also fairly common for the check engine soon warning light to come on when this code is detected.

How does a mechanic diagnose the B1973 code?

The B1973 code will be diagnosed using a standard OBD-II trouble code scanner. A reputable technician can use the scanner to view the freeze frame data and assess the code. Additional trouble codes will also be checked for, and if there are multiple codes present, the mechanic will diagnose them in the order that they appear in. The trouble codes should then be reset, the vehicle restarted, and the code checked for. If it is no longer present, then an erroneous trigger or an intermittent error should be assumed.

If the B1973 code is still present, then a thorough visual inspection of the electrical components should be performed. If there are blown fuses, shorted wires, or loose connectors, then they should be replaced. If this inspection yields no results, then a defective passenger rear seat down switch is the likely issue.

Any replacements or repairs should be followed by a resetting of the trouble code, a restart of the vehicle, and another check for the trouble code. Doing this helps the mechanic know as soon as the issue is fully resolved.

Common mistakes when diagnosing the B1973 code

The most common error when diagnosing the B1973 code comes from a failure to abide by the OBD-II diagnosis protocol. The protocol should be observed step by step at all times, as it helps ensure a speedy and accurate diagnosis.

Often electrical component damage is overlooked and passenger rear seat down switches are condemned inaccurately.

How serious is the B1973 code?

The B1973 code does not cause any drivability problems, but it will likely keep the back end of the front passenger seat cushion from being adjusted up or down. This inability to adjust can limit passenger comfort. While not urgent, an inspection should be scheduled when this code is detected.

What repairs can fix the B1973 code?

Possible repairs for the B1973 trouble code are:

Additional comments for consideration regarding the B1973 code

The B1973 code is a manufacturer specific trouble code. Manufacturer specific codes are codes with different definitions for different automakers. The B1973 code suggests a passenger rear seat down switch circuit error for some cars, but detects a different body problem for many other vehicles.

Need help with a B1973 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
B1973

No more waiting rooms! Our mechanics will come to you to diagnose and fix the B1973 code.

SCHEDULE B1973 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

P2442 OBD-II Trouble Code: Secondary Air Injection System Switching Valve Stuck Open Bank 2
P2442 P2442 code definition The P2442 code is a generic powertrain code related to the auxiliary emissions control system. This particular code appears when the bank 2 secondary air injection valve stays open. The P2442 code is also related to:...
P2432 OBD-II Trouble Code: Secondary Air Injection System Air Flow/Pressure Circuit Low Bank 1
P2432 code definition The P2432 trouble code is a generic powertrain code related to the auxiliary emissions control system. This particular code...
P3419 OBD-II Trouble Code: Cylinder 3 Deactivation/Intake Valve Control Circuit Low
P3419 means a problem was detected with the cylinder deactivation mode due to bad lifters, sensors, solenoids, electrical issues, or low oil pressure.

Related questions

EPC light
Any number of dozens of sensors, control modules, or computers can be causing your issue. Including the oil pressure switch (https://www.yourmechanic.com/services/oil-pressure-sensor-replacement) being disconnected. The only way to know why exactly the light is coming on is to have the system...
I got code P0016 and P0008. I just want to know what caused the problem and which one is bank 1 sensor A?
Hello, this problem (both codes apply to the same problem) relates to a calculated "bad timing correlation" between the crankshaft and the exhaust camshaft for cylinder 1 (cylinder head at front of the car). Engine management has tolerances for the...
After installation of a new throttle body does everything reset to normal function on the car?
Hi there. After replacing the throttle body to your engine, if the engine light was on and has a pending code, the code will go away. If the code was a hard permanent code, then the ECM (computer) would need...

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