Engine-Codes - Generic - P1685

P1685 Code - Wrong or Invalid Key Message Received from SKIM

- Code Popularity: 26,241 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC P1685?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Reprogram Smart Key Immobilizer Module (SKIM) key
  • Incorrect Vehicle Identification Number (VIN) in Powertrain Control Module (PCM)
  • Faulty Immobilizer Key
  • Faulty Immobilizer Module
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How to Fix the DTC P1685?

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 pins.

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What is the Cost to Diagnose the Code?

Labor: 1.0

The cost to diagnose the P1685 code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.

What are Code Possible Symptoms?

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

What Does the P1685 Code Mean?

The Diagnostic Trouble Code (DTC) P1685 indicates a problem related to either your ignition key or your Immobilizer Module. This code can be triggered by various issues, such as an incorrect Vehicle Identification Number (VIN) stored in the Powertrain Control Module (PCM), the use of an invalid Sentry Key Immobilizer Module (SKIM) key, a lack of communication with the SKIM, absence of a VIN programmed in the PCM, a malfunctioning SKIM, or the presence of defective PCM or SKIM trouble codes.

P1685 Code - Wrong or Invalid Key Message Received from SKIM

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Code P1685 Information for Specific Makes

  • P1685 Buick Transmission Control Module Power Up Temperature Sensor Circuit Low Voltage
  • P1685 Cadillac Transmission Control Module Power Up Temperature Sensor Circuit Low Voltage
  • P1685 Chevrolet Transmission Control Module Power Up Temperature Sensor Circuit Low Voltage
  • P1685 Chrysler Wrong or Invalid Key Message Received from SKIM  📷
  • P1685 Dodge Wrong or Invalid Key Message Received from SKIM  📷
  • P1685 GMC Transmission Control Module Power Up Temperature Sensor Circuit Low Voltage
  • P1685 Jeep Wrong or Invalid Key Message Received from SKIM  📷
  • P1685 Pontiac Transmission Control Module Power Up Temperature Sensor Circuit Low Voltage
  • P1685 Saturn Transmission Control Module Power Up Temperature Sensor Circuit Low Voltage

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