AutoCodes – Pontiac – B1770 Pontiac

B1770 Pontiac Code - Driver Seat Motor Horizontal Circuit

Quick Answer

The seat adjuster motors are controlled by the Driver Seat Module (DSM) through the adjuster motor control circuits. Common causes include Faulty Driver Seat Motor Horizontal, Driver Seat Motor Horizontal harness is open or shorted, Driver Seat Motor Horizontal 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: B1770 Pontiac indicates Driver Seat Motor Horizontal Circuit.
Common causes: Common causes include Faulty Driver Seat Motor Horizontal, Driver Seat Motor Horizontal harness is open or shorted, Driver Seat Motor Horizontal 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 603

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 Jul 31, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1770 Pontiac Description

The seat adjuster motors are controlled by the Driver Seat Module (DSM) through the adjuster motor control circuits. In an inactive state both of the motor control circuits are grounded within the DSM. In an active state the DSM switches the appropriate motor control circuit to battery positive voltage. The direction of the adjuster motor rotation is determined by which of the motor control circuits is switched to battery positive voltage while the other remains grounded. During adjuster motor operation the DSM also monitors the current flow through the motor control circuits.

OBDII Code B1770 Pontiac - Driver Seat Motor Horizontal Circuit - AutoCodes.com — B1770 Pontiac Code - Driver Seat Motor Horizontal Circuit

What does this mean?

What are the Possible Causes of the DTC B1770 Pontiac?

Faulty Driver Seat Motor Horizontal
Driver Seat Motor Horizontal harness is open or shorted
Driver Seat Motor Horizontal circuit poor electrical connection
Faulty Driver Seat Module (DSM)

How to Fix the DTC B1770 Pontiac?

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 B1770 Pontiac 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 B1770 Pontiac Code

1. What does OBDII code B1770 mean for a Pontiac?

Code B1770 indicates an issue with the driver seat motor horizontal circuit, which controls the horizontal adjustment of the seat.

2. What are the symptoms of code B1770 in a Pontiac?

Common symptoms include the driver seat not moving horizontally, limited seat adjustability, or unresponsiveness when using the seat adjustment controls.

3. What causes code B1770 in a Pontiac?

Possible causes include a faulty seat motor, damaged wiring or connectors in the seat motor circuit, or a malfunctioning seat control module.

4. Can a blown fuse cause code B1770?

Yes, a blown fuse in the seat motor circuit can disrupt power to the motor, triggering code B1770.

5. How do you diagnose code B1770 in a Pontiac?

Diagnosis involves inspecting the seat motor, checking for damaged wiring or loose connections, testing the circuit for continuity, and verifying the functionality of the seat control module.

6. Can I still drive my Pontiac with code B1770 active?

Yes, the vehicle is still drivable, but the driver seatâ€™s adjustability may be compromised, potentially affecting comfort or safety.

7. How is code B1770 fixed in a Pontiac?

Repairs may include replacing a faulty seat motor, repairing damaged wiring or connectors, or reprogramming or replacing the seat control module.

8. What tools are needed to fix code B1770?

Basic tools include a multimeter for testing electrical circuits, a scan tool for clearing codes, and potentially a socket set for accessing the seat motor.

9. Can I reset code B1770 without repairing the issue?

While the code can be cleared temporarily with a scan tool, it will likely return unless the underlying problem is resolved.

10. How much does it cost to repair code B1770 in a Pontiac?

Repair costs vary depending on the issue but may range from $50 for minor wiring repairs to $500 or more if the seat motor or module needs replacement.