P1686 Code - No SKIM BUS Messages Received
Quick Answer
The Powertrain Control Module (PCM) monitors the Smart Key Immobilizer Module (SKIM) for messages. Common causes include Reprogram Smart Key Immobilizer Module (SKIM) key, Faulty Immobilizer Key, Faulty Immobilizer Module. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P1686 indicates No SKIM BUS Messages Received.
- Common causes
- Common causes include Reprogram Smart Key Immobilizer Module (SKIM) key, Faulty Immobilizer Key, Faulty Immobilizer Module.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code P1686 Description
What are the Possible Causes of the DTC P1686?
- Reprogram Smart Key Immobilizer Module (SKIM) key
- Faulty Immobilizer Key
- Faulty Immobilizer Module
How to Fix the DTC P1686?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P1686 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Information for Specific Makes
- P1686 Acura — Automotic Transmission To Engine Control Module Signal 'B' Input Low
- P1686 Buick — Transmission Control Module Power Up Temperature Sensor Circuit High Voltage
- P1686 Cadillac — Transmission Control Module Power Up Temperature Sensor Circuit High Voltage
- P1686 Chevrolet — Transmission Control Module Power Up Temperature Sensor Circuit High Voltage
- P1686 Chrysler — No SKIM BUS Messages Received
- P1686 Dodge — No SKIM BUS Messages Received
- P1686 GMC — Transmission Control Module Power Up Temperature Sensor Circuit High Voltage
- P1686 Honda — Automotic Transmission To Engine Control Module Signal 'B' Input Low
- P1686 Isuzu — Automotic Transmission To Engine Control Module Signal 'B' Input Low
- P1686 Jeep — No SKIM BUS Messages Received
- P1686 Pontiac — Transmission Control Module Power Up Temperature Sensor Circuit High Voltage
- P1686 Saturn — Transmission Control Module Power Up Temperature Sensor Circuit High Voltage
Frequently Asked Questions about P1686 Code
1. What are the common symptoms of OBDII code P1686 (No SKIM BUS Messages Received)?
The common symptoms of code P1686 include the engine not starting, the engine stalling after starting, and the security light staying on.
2. What are the possible causes of OBDII code P1686?
Possible causes of code P1686 include a faulty SKIM key, a malfunctioning SKIM module, a wiring issue in the SKIM system, or a communication problem between the SKIM module and the PCM.
3. How can I diagnose the cause of OBDII code P1686?
Diagnosing code P1686 involves checking the SKIM key for proper programming, inspecting the SKIM module for any visible damage, testing the wiring in the SKIM system for continuity, and using a scan tool to check for communication between the SKIM module and the PCM.
4. Can I repair OBDII code P1686 on my own?
Repairing code P1686 may require specialized equipment and knowledge. It is recommended to consult a professional mechanic or dealership to properly diagnose and repair the issue.
5. Is it safe to continue driving with OBDII code P1686 present?
It is not recommended to continue driving with code P1686 present, as it may lead to further issues like the engine stalling unexpectedly. It is best to address the problem promptly.
6. How much does it typically cost to repair OBDII code P1686?
The cost of repairing code P1686 can vary depending on the specific cause of the issue. It is advisable to get a diagnosis from a mechanic to determine the exact repair cost.
7. Can OBDII code P1686 be triggered by a dead battery?
Yes, a dead or disconnected battery can sometimes trigger code P1686 due to a loss of communication between the SKIM module and the PCM. Reconnecting or replacing the battery may resolve the issue.
8. Will resetting the fault codes clear OBDII code P1686?
Resetting the fault codes may temporarily clear code P1686, but if the underlying issue is not addressed, the code is likely to reappear. It is important to diagnose and fix the root cause of the problem.
9. Are there any preventative measures to avoid OBDII code P1686?
To prevent code P1686, it is recommended to regularly check the condition of the SKIM key, ensure proper maintenance of the SKIM module, and address any electrical issues promptly.
10. Can a locksmith help with resolving OBDII code P1686 related to the SKIM system?
Locksmiths with experience in automotive key programming may be able to assist with resolving issues related to the SKIM key or programming. However, for complex issues with the SKIM module or communication system, it is best to consult a qualified mechanic.
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