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AutoCodes - Generic - B1681

B1681 Code - PATS Transceiver Module Signal Is Not Received

- Code Popularity: 58,349 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC B1681?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Passive Anti-Theft System (PATS) transceiver
  • Faulty Powertrain Control Module (PCM)
  • Faulty Passive Anti-Theft System (PATS) key
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How to Fix the DTC B1681?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B1681 code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

Code B1681 Description

During each vehicle start sequence, the transceiver module reads the Passive Anti-Theft System (PATS) key identification code and sends the data to the Powertrain Control Module (PCM).

OBDII Code B1681 - PATS Transceiver Module Signal Is Not Received - AutoCodes.com
B1681 Code - PATS Transceiver Module Signal Is Not Received

Need More Information on the Code?

Need more information on how to fix the B1681 code? Get Access to Factory Service Manuals

Information for Specific Makes

  • B1681 Chrysler Rear Headlamp Leveling Sensor Circuit Performance
  • B1681 Dodge Rear Headlamp Leveling Sensor Circuit Performance
  • B1681 Ford PATS Transceiver Module Signal Is Not Received
  • B1681 Jeep Rear Headlamp Leveling Sensor Circuit Performance
  • B1681 Lincoln PATS Transceiver Module Signal Is Not Received
  • B1681 Mercury PATS Transceiver Module Signal Is Not Received
  • B1681 RAM Rear Headlamp Leveling Sensor Circuit Performance

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Code B1681 comments

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