B1681 - PATS Transceiver Module Signal Is Not Received

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3   
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Possible causes

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

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 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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