OBD Guide
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P1686

No SKIM BUS Messages Received

P1686 is an OBD-II diagnostic trouble code meaning: No SKIM BUS Messages Received. Common causes: open or short circuit in data bus wiring, skim module malfunction. Estimated repair cost: $56–167.

Severity
🔴 High
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • The car won't start
  • Engine stalls after starting
  • The immobilizer indicator is on
  • Check Engine light comes on
  • Problems with the operation of other systems connected to the bus

Causes

  • Open or short circuit in data bus wiring
  • SKIM module malfunction
  • Problems with power or grounding of the SKIM module
  • Fault in other modules connected to the bus
  • Communication protocol problems

How to Fix

  1. Check the integrity of the data bus wiring
  2. Check power and grounding of the SKIM module
  3. Diagnose the SKIM module
  4. Check other modules connected to the bus
  5. If necessary, replace the SKIM module

Related codes

P1687P1688B1686

Error P1686 by Vehicle Brand

AcuraBuickCadillacChevroletChryslerDodgeGMGMCHondaInfinitiJeepMazdaOldsmobilePlymouthPontiacSaturnVolkswagen

FAQ

What does the P1686 code mean?

P1686 is an OBD-II diagnostic trouble code that indicates: No SKIM BUS Messages Received

What causes a P1686 error code?

The most common causes of P1686 include: Open or short circuit in data bus wiring; SKIM module malfunction; Problems with power or grounding of the SKIM module; Fault in other modules connected to the bus.

How do I fix a P1686 diagnostic trouble code?

To fix P1686: Check the integrity of the data bus wiring. Check power and grounding of the SKIM module. Diagnose the SKIM module. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1686?

Yes, but get it checked soon

How much does it cost to fix P1686?

The estimated repair cost for P1686 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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