AutoCodes – Cadillac – B1826 Cadillac

B1826 Cadillac Code - Seat Recline Position Sensor Circuit Range/Performance

Quick Answer

The sensor that sets this Diagnostic Trouble Code (DTC) is attached to the seat directional motor it monitors. Common causes include Faulty Seat Recline Position Sensor, Seat Recline Position Sensor harness is open or shorted, Seat Recline Position Sensor circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: B1826 Cadillac indicates Seat Recline Position Sensor Circuit Range/Performance.
Common causes: Common causes include Faulty Seat Recline Position Sensor, Seat Recline Position Sensor harness is open or shorted, Seat Recline Position Sensor circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 1,406

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Nov 13, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1826 Cadillac Description

The sensor that sets this Diagnostic Trouble Code (DTC) is attached to the seat directional motor it monitors. It receives a 5-volt reference and low reference from the Memory Seat Module (MSM)/Driver Position Module (DPM). The sensor sends a voltage signal that varies with the movement of the seat through the sensor signal circuit to the MSM/DPM. Then based on this voltage signal, the MSM/DPM determines the position of the seat.

OBDII Code B1826 Cadillac - Seat Recline Position Sensor Circuit Range/Performance - AutoCodes.com — B1826 Cadillac Code - Seat Recline Position Sensor Circuit Range/Performance

What does this mean?

What are the Possible Causes of the DTC B1826 Cadillac?

Faulty Seat Recline Position Sensor
Seat Recline Position Sensor harness is open or shorted
Seat Recline Position Sensor circuit poor electrical connection
Faulty Memory Seat Module (MSM)/Driver Position Module (DPM)

How to Fix the DTC B1826 Cadillac?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B1826 Cadillac code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about B1826 Cadillac Code

1. What does the OBDII code B1826 mean on a Cadillac?

The B1826 code indicates an issue with the Seat Recline Position Sensor Circuit, specifically a range or performance problem in the circuit.

2. What are common symptoms of a B1826 code in a Cadillac?

Symptoms may include a malfunctioning or unresponsive seat recline feature, a warning light on the dashboard, or difficulty adjusting the seat position.

3. What causes the B1826 code to appear?

Common causes include a faulty seat position sensor, damaged wiring or connectors in the sensor circuit, or a malfunctioning seat control module.

4. Can I still drive my Cadillac with a B1826 code?

Yes, the vehicle is still drivable, but the seat recline functionality may be limited, which could affect comfort and safety.

5. How do I diagnose a B1826 code in my Cadillac?

Diagnosis involves inspecting the seat position sensor, checking the wiring and connectors for damage or corrosion, and using a scan tool to monitor sensor data and confirm the fault.

6. How do you fix a B1826 code on a Cadillac?

Repairs may include replacing the seat position sensor, repairing or replacing damaged wiring, or reprogramming or replacing the seat control module.

7. How much does it cost to fix a B1826 code?

Repair costs vary depending on the issue, but replacing the seat position sensor typically costs between $150 and $300, including parts and labor.

8. Can a B1826 code be caused by a dead battery?

While unlikely, a dead or weak battery could potentially cause electrical issues, including sensor malfunctions. Verify battery health as part of the diagnosis.

9. Do I need to reprogram the seat control module after fixing a B1826 code?

In some cases, reprogramming the seat control module may be necessary after replacing components to ensure proper functionality.

10. Can I clear the B1826 code without fixing the problem?

Clearing the code without addressing the underlying issue will only temporarily remove it; the code will likely return once the fault is detected again.