B0071 Hummer: Code Meaning, Causes, Symptoms, & Tech Notes

|What are the Possible Causes of the Code B0071 Hummer?

Faulty Passenger Seat Belt Retractor (Passenger Seat Belt Tension Sensor)
Passenger Seat Belt Retractor harness is open or shorted
Passenger Seat Belt Retractor circuit poor electrical connection
Faulty Passenger Presence Module

|How to Fix the B0071 Hummer Code?

Start by checking the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

Search B0071 Hummer Questions and Answers

What does this mean?

|Code B0071 Hummer Tech Notes

B0071:03 Passenger Seat Belt Tension Sensor Circuit Voltage Below Threshold
B0071:04 Passenger Seat Belt Tension Sensor Circuit Open
B0071:07 Passenger Seat Belt Tension Sensor Circuit Voltage Above Threshold
B0071:08 Passenger Seat Belt Tension Sensor Circuit Voltage Performance Signal Invalid

|What is the Cost to Diagnose the Code B0071 Hummer?

Labor: 1.0

The cost to diagnose the B0071 Hummer code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.

Does your Hummer have Safety Recalls? → Check here

|What are Code B0071 Hummer Possible Symptoms?

Air Bag Warning Light ON

|What Does the B0071 Hummer Code Mean?

The seat belt tension sensor is a sensor mounted on the passenger seat belt retractor and provides input to the Passenger Presence Module. When an infant car seat is properly restrained on the front passenger seat, the seat belt is tightly secured through the car seat. The seat belt pulls on the tension sensor and changes the voltage signal to the Passenger Presence Module. The Passenger Presence Module monitors the belt tension sensor signal circuit and if a fault is detected, the Diagnostic Trouble Code (DTC) will be set. When the Passenger Presence Module detects this DTC, it will send out a serial data message, and the Inflatable Restraint Sensing and Diagnostic Module will notify the customer of the enable/disable status by illuminating the OFF indicator on the PASSENGER AIR BAG ON/OFF indicators. The Inflatable Restraint Sensing and Diagnostic Module (SDM) will then suppress the deployment of the passenger instrument panel air bag and illuminate the AIR BAG indicator.

B0071 Hummer Code - Passenger Seat Belt Tension Sensor Circuit

|Need more Information on the B0071 Hummer Code?

Need more information on how to fix the B0071 Hummer code? Get Access to Factory Service Manuals

|Need Help with the B0071 Hummer Code?

Get the B0071 Hummer code diagnosed by a professional: Find a repair shop in your area

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.