[SOLVED] Dodge P1685 Code: Resolve Invalid Key Message From Skim

The OBD code P1685 for Dodge indicates a communication error between the Powertrain Control Module (PCM) and the Smart Key Immobilizer Module (SKIM).

Symptoms include the Engine Light being ON.

Causes can be a reprogrammed SKIM key, incorrect VIN in the PCM, faulty immobilizer key or module.

This issue is serious as it can prevent the vehicle from starting.

A possible fix involves checking wiring harnesses, connectors, and components for damage or corrosion.

Repair Importance Level10.0 (Out of 10)
Estimated Repair TimeApproximately 1.0 hour
Repair Difficulty Level10.0 (Out of 10)

I know how frustrating it is to see that warning light pop up again and again. You don’t need to spend money at the mechanic just to clear it. With this pocket-friendly automatic car scanner, you can do it yourself in seconds and and avoid the time and inconvenience of driving to a mechanic. Just plug it in, connect to your Android or iOS phone, and instantly see live data. Understand the fault code, clear it right away, and decide if it’s something urgent or if you’re good to drive. It even monitors your car and sends notifications to your phone, so you’re always in control. Simple, fast, and stress-free—today’s offer price!

The Dodge P1685 fault code indicates a problem with the ignition key.

  • Symptoms: Engine Light ON.
  • Vehicle may not start.
  • Engine may start and then stall.
  • Engine may run rough or have poor acceleration.

Do you know you can clear most fault codes—but some could mean serious danger? Don’t take chances with your safety or your family’s safety. This budget-friendly car scanner makes it easy to clear fault codes in seconds while showing you exactly what’s wrong. Plug it in, connect to your Android or iOS phone, and instantly check live data. You’ll know if it’s a minor issue you can clear or something serious that needs attention—so you can drive safely and stress-free. (Today’s Deal)

Possible reasons for Dodge fault code p1685 include issues with the SKIM key or module communication.

  • P1685 can be caused by a need to reprogram the Smart Key Immobilizer Module (SKIM) key.
  • An incorrect Vehicle Identification Number (VIN) stored in the Powertrain Control Module (PCM).
  • A faulty Immobilizer Key.
  • A faulty Immobilizer Module.

Address the issue by checking the connections and wiring related to the SKIM module.

  • To fix the Dodge OBDII code P1685, first, review the possible causes mentioned above.
  • Visually examine the corresponding wiring harness and connectors for any damage.
  • Check the connector pins for signs of being broken, bent, pushed out, or corroded.
  • If no issues are found with the wiring and connectors, consider resetting the Powertrain Control Module (PCM) to clear the code.
  • If the code persists after resetting the PCM, it may be necessary to replace the PCM with a new one and program it to the vehicle.

Diagnosing and repairing Dodge fault code P1685 typically involves addressing issues with the SKIM module.

The cost to diagnose and fix the Dodge OBD code P1685 typically ranges from $75 to $150 per hour for labor rates.

With an estimated repair time of 1. 0 hour, the total cost can be around $75 to $150, depending on shop rates and the complexity of the issue.

Dodge fault code P1685 indicates a problem with the ignition key.

Dodge OBD code P1685 means Skim Invalid Key.

This code is triggered by the Sentry Key Immobilizer Module (SKIM) when an invalid key is used to start the vehicle.

The SKIM system is involved in this code, which is designed to prevent the engine from starting if an incorrect key is used.

For Dodge code P1685, check for a communication error between the SKIM module and PCM.

OBDII code P1685 in a Dodge typically indicates a communication issue between the PCM and SKIM module.

To diagnose, check the TCM power and ground using a multimeter.

Use a scan tool to confirm TCM communication over the CAN network.

Visually inspect wiring harnesses and connectors for damage, focusing on the PCM and SKIM connections.

Look for broken, bent, or corroded pins.

Reflash the PCM and SKIM modules if necessary.

This process helps ensure proper communication between the modules, resolving the P1685 fault code.

1. What does OBD code P1685 mean in a Dodge vehicle?

OBD code P1685 in a Dodge means an issue with the Smart Key Immobilizer Module (SKIM) key. Check for faulty key, module, or incorrect VIN in PCM. Inspect wiring and connectors.

2. What are the common causes of OBD code P1685 in a Dodge vehicle?

Common causes of OBD code P1685 in a Dodge vehicle include faulty Immobilizer Key, Immobilizer Module, incorrect VIN in PCM, and reprogramming Smart Key Immobilizer Module.

3. How can I diagnose and fix OBD code P1685 in my Dodge vehicle?

Diagnose and fix OBD code P1685 in Dodge: Check SKIM key, VIN in PCM, immobilizer key/module. Inspect wiring, connectors for damage, corrosion, bent pins.

Dodge p1685 error fault code explained

If your Dodge is displaying OBD code p1685, you may experience issues with the vehicle not starting or intermittent stalling.

This code is commonly associated with a communication error between the key and the engine control module (ECM), possibly due to a faulty ignition key, a defective Wireless Control Module (WCM), or wiring problems in the key/immobilizer system.

To address Dodge OBD code p1685, start by checking the ignition key for damage or wear.

Inspect the wiring connections between the key, WCM, and ECM for any signs of corrosion, breaks, or

Scroll to Top