Engine-CodesCadillac – B2170 Cadillac

B2170 Cadillac Code - Passenger Seat Cushion Heater Sensor

Quick Answer

The B2170 code for Cadillac vehicles refers to an issue with the passenger seat cushion heater sensor. Common causes include Faulty passenger seat cushion heater sensor, Wiring or electrical connection issues, Blown fuse related to the seat heater system. 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
B2170 Cadillac indicates Passenger Seat Cushion Heater Sensor.
Common causes
Common causes include Faulty passenger seat cushion heater sensor, Wiring or electrical connection issues, Blown fuse related to the seat heater system.
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.
Table of contents Created and updated by William Orellana on Sep 12, 2024
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Code B2170 Cadillac Description

The B2170 code for Cadillac vehicles refers to an issue with the passenger seat cushion heater sensor. This sensor is responsible for monitoring the temperature of the seat cushion heater in the passenger seat. When this sensor malfunctions or fails, it can lead to various issues with the heating system in the seat, affecting the comfort of the passenger and potentially causing safety concerns.

OBDII Code B2170 Cadillac - Passenger Seat Cushion Heater Sensor
B2170 Cadillac Code - Passenger Seat Cushion Heater Sensor

Common Causes of B2170 Cadillac

  1. Faulty passenger seat cushion heater sensor
  2. Wiring or electrical connection issues
  3. Blown fuse related to the seat heater system
  4. Defective heating element in the seat cushion

Symptoms of B2170 Cadillac

  1. Inoperative passenger seat heater
  2. Uneven heating in the passenger seat
  3. Overheating or excessive heat in the passenger seat
  4. Dashboard warning light related to seat heater system

How to Fix B2170 Cadillac

  1. Begin by diagnosing the specific cause of the B2170 code using a diagnostic scanner to pinpoint the issue with the passenger seat cushion heater sensor.
  2. Inspect the wiring and electrical connections related to the sensor to check for any damage or loose connections. Repair or replace as needed.
  3. Test the sensor itself to determine if it is functioning properly. Replace the sensor if it is found to be faulty.
  4. Check the fuse related to the seat heater system and replace if necessary.
  5. If the issue persists, inspect the heating element in the seat cushion for any defects and replace if needed.

Cost to Fix B2170 Cadillac

The typical repair costs for addressing the B2170 code related to the passenger seat cushion heater sensor can range from $150 to $400, including parts and labor. However, it's important to note that actual costs may vary depending on the specific diagnosis time and labor rates at auto repair shops, which can be influenced by factors such as location, vehicle make and model, and engine type. It's recommended to inquire about local rates for a more accurate estimate.

Tech Notes for B2170 Cadillac

B2170 02: Passenger Seat Cushion Heater Sensor Circuit Short to Ground

B2170 05: Passenger Seat Cushion Heater Sensor Circuit High Voltage/Open

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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 B2170 Cadillac Code

1. What does the OBDII code B2170 mean on a Cadillac?

B2170 indicates an issue with the passenger seat cushion heater sensor, typically involving a malfunction in the sensor or its circuit.

2. What are the common symptoms of the B2170 code?

Symptoms may include the passenger seat heater not functioning, inconsistent heating, or an illuminated warning light on the dashboard.

3. What causes the B2170 code to appear?

Common causes include a faulty seat cushion heater sensor, damaged wiring or connectors, or an issue with the seat heater control module.

4. Can the B2170 code cause other problems in my Cadillac?

While it primarily affects the seat heater functionality, it could also impact passenger comfort or trigger additional alerts if related systems are affected.

5. How can I diagnose the B2170 code?

Use an OBDII scanner to confirm the code, inspect the seat heater sensor and wiring for damage, and test the sensor’s resistance with a multimeter.

6. Is it safe to drive with the B2170 code?

Yes, it's safe to drive, but the passenger seat heater may not work properly, which could reduce comfort in cold weather.

7. How is the B2170 code typically fixed?

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

8. How much does it cost to fix the B2170 code?

The repair cost varies but typically ranges from $100 to $300, depending on whether the sensor, wiring, or module needs replacement.

9. Can I reset the B2170 code without fixing the issue?

Resetting the code without addressing the root cause may temporarily clear the warning, but the issue will likely return.

10. How can I prevent the B2170 code from recurring?

Ensure proper care of the seat cushions, avoid placing heavy or sharp objects on the seat, and address any electrical issues promptly.

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