Engine-Codes - Generic - U1471

U1471 - Implausible Data Received From Left Frontal Acceleration Sensor

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What is this?
Table of contents

U1471 Possible Causes

  • Faulty Left Frontal Acceleration Sensor
  • Left Frontal Acceleration Sensor harness is open or shorted
  • Left Frontal Acceleration Sensor circuit poor electrical connection
  • Faulty Occupant Restraint Controller (ORC)

How is the U1471 code repair?

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.

What is the cost to diagnose the U1471 code

Labor: 1.0

The cost to diagnose the U1471 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.
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Possible Symptoms

  • Air Bag Warning Light ON

U1471 Meaning

Six side impact sensors are used on vehicles equipped with side curtain airbags, three on each side of the vehicle. One acceleration-type sensor is located behind the B-pillar trim near the base of each B-pillar, and one acceleration-type sensor is located behind the quarter panel trim near the base of each C-pillar. One pressure-type sensor is located on each front poor hardware carrier panel, concealed behind each front door inside the trim panel. The Left Front Impact Sensor is mounted in the engine compartment behind the front lamp unit. The Left Front Impact Sensor is directly hard wired to the Occupant Restraint Controller (ORC) Module. The impact sensors perform their own self-test using power supplied by the Occupant Restraint Controller (ORC) then communicate this status back to the ORC with periodic updates. The repair of this fault condition involves verifying the integrity of the wiring between the ORC and the sensor.
This code will set, if the ORC and the Left Front Impact Sensor do not establish and maintain valid data communications. The Diagnostic Trouble Code (DTC) will become Active after the fault has set for a minimum of 100 milliseconds (ms). The DTC will go to Stored after the ORC Left Front Impact Sensor communication fault has been removed or the suspect front impact sensor has been replaced. The clearing of this fault is immediate upon the suspect internal error being removed or the suspect sensor replaced. The Airbag Warning Lamp (AWL) will set in the instrument cluster.

More Information

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Information for specific makes

  • U1471 CHRYSLER Implausible Data Received From Left Frontal Acceleration Sensor
  • U1471 DODGE Implausible Data Received From Left Frontal Acceleration Sensor
  • U1471 JEEP Implausible Data Received From Left Frontal Acceleration Sensor
  • U1471 RAM Implausible Data Received From Left Frontal Acceleration Sensor

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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.