B1681 - PATS Transceiver Module Signal Is Not Received

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

B1681 Possible Causes

  • Faulty Passive Anti-Theft System (PATS) transceiver
  • Faulty Powertrain Control Module (PCM)
  • Faulty Passive Anti-Theft System (PATS) key

How do I fix code B1681?

Check 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.

Cost of diagnosing the B1681 code

Labor: 1.0

The cost of diagnosing the B1681 code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.

Possible Symptoms

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

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 More Information

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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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