U0170 GMC Code - Lost Communication With Passenger Presence Detection Sensor Module
Quick Answer
The U0170 GMC diagnostic trouble code (DTC) indicates that there has been a loss of communication with the Passenger Presence Detection Sensor Module in the vehicle. Common causes include Faulty Passenger Presence Detection Sensor Module, Wiring or connection issues in the airbag system, Can network communication problems. 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
- U0170 GMC indicates Lost Communication With Passenger Presence Detection Sensor Module.
- Common causes
- Common causes include Faulty Passenger Presence Detection Sensor Module, Wiring or connection issues in the airbag system, Can network communication problems.
- 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 U0170 GMC Description
The U0170 GMC diagnostic trouble code (DTC) indicates that there has been a loss of communication with the Passenger Presence Detection Sensor Module in the vehicle. This module is responsible for detecting when there is a passenger in the front seat and activating the airbag system accordingly. When communication is lost with this module, it can lead to potential safety hazards as the airbags may not deploy properly in the event of a collision.
Common Causes of U0170 GMC
- Faulty Passenger Presence Detection Sensor Module.
- Wiring or connection issues in the airbag system.
- Can network communication problems.
- Corrosion or damage to the sensor module connectors.
- Electrical issues within the vehicle's system.
Symptoms of U0170 GMC
- Airbag warning light illuminated on the dashboard.
- Inability to turn off the passenger-side airbag.
- Erratic behavior of the airbag system.
- Inconsistent activation of the airbags during testing.
- Diagnostic trouble code U0170 stored in the vehicle's computer system.
How to Fix U0170 GMC
- Begin by using a diagnostic scanner to retrieve and clear the U0170 code from the vehicle's computer system.
- Inspect the wiring and connectors related to the Passenger Presence Detection Sensor Module for any signs of damage or corrosion.
- Test the sensor module itself to determine if it is functioning correctly or needs to be replaced.
- If necessary, replace the Passenger Presence Detection Sensor Module with a new one and ensure proper calibration and programming.
- Perform a thorough test of the airbag system to verify that the issue has been resolved and that the airbags deploy as intended.
Cost to Fix U0170 GMC
** The typical repair costs for addressing a U0170 GMC code can vary depending on the specific cause of the issue and the cost of parts and labor. On average, the repair for this issue could range from $200 to $500, including the cost of a new Passenger Presence Detection Sensor Module if needed. However, it is important to note that labor rates at auto repair shops can vary significantly, so it is advisable to inquire about specific rates in your area for a more accurate estimate.
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Precautions for SRS “AIR BAG” and “SEAT BELT PRE-TENSIONER” Service
- Never probe the electrical connectors on air bag, side air curtain modules or seat belts.
- Never disassemble or tamper with safety belt buckle/retractor pretensioners, adaptive load limiting retractors, safety belt inflators, or probe the electrical connectors.
- Do not use electrical test equipment to check SRS circuits unless instructed to in this Service Manual.
- Before servicing the SRS, turn ignition switch OFF, disconnect both battery cables and wait at least 3 minutes. For approximately 3 minutes after the cables are removed, it is still possible for the air bag and seat belt pre-tensioner to deploy. Therefore, do not work on any SRS connectors or wires until at least 3 minutes have passed.
Failure to follow this instruction may result in the accidental deployment of these modules, which increases the risk of serious personal injury or death.
Frequently Asked Questions about U0170 GMC Code
1. What are common symptoms of OBDII code U0170 in a GMC related to the Passenger Presence Detection Sensor Module?
- Common symptoms include the airbag warning light staying on, malfunctioning airbag deployment system, and potential loss of communication with the passenger presence detection sensor module.
2. What are some possible causes of OBDII code U0170 GMC "Lost Communication With Passenger Presence Detection Sensor Module"?
- Possible causes include damaged wiring or connectors, a faulty passenger presence detection sensor module, software issues, or a problem with the airbag control module.
3. How can I diagnose the issue related to OBDII code U0170 GMC?
- Diagnosis typically involves using a scan tool to read the code, checking for other related trouble codes, inspecting the wiring and connectors for damage, and testing the passenger presence detection sensor module.
4. Can I still drive my GMC with the U0170 code present?
- It is not recommended to drive the vehicle with the U0170 code active, as it indicates a potential issue with the airbag system, which could affect safety in the event of a collision.
5. How can I repair the U0170 code in my GMC?
- Repairing the U0170 code may involve fixing any damaged wiring or connectors, replacing the passenger presence detection sensor module if faulty, or reprogramming the airbag control module if necessary.
6. Is it possible to reset the U0170 code in a GMC without fixing the underlying issue?
- While you can clear the code using a scan tool, it is important to address the root cause of the problem to ensure the airbag system functions properly and safely.
7. Will the U0170 code cause my airbags to not deploy in an accident?
- The U0170 code indicates a communication issue rather than a direct problem with airbag deployment. However, it is crucial to address the code to ensure the airbag system functions correctly during an accident.
8. How much does it typically cost to repair the U0170 code in a GMC?
- The cost of repairing the U0170 code can vary depending on the specific cause of the issue, but it may involve a few hundred dollars for parts and labor.
9. Can I fix the U0170 code in my GMC myself, or do I need a professional mechanic?
- Depending on your skill level and access to tools, you may be able to address the U0170 code yourself by checking wiring and connectors. However, complex repairs or component replacements may require a professional mechanic.
10. How can I prevent the U0170 code from reoccurring in my GMC in the future?
- To prevent the U0170 code from reoccurring, it is essential to perform regular maintenance checks on the airbag system, ensure all wiring and connectors are in good condition, and address any related issues promptly.
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