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B0686 Engine Trouble Code

Meaning of B0686 engine trouble code is a kind of body trouble code and B0686 if your catalytic convertor fails completely, you eventually won't be able to keep the car running. Your gas mileage will also be terrible, so you should try and fix it as soon as you can. Unfortunately, the average replacement cost is around $2,000 and you can't do it yourself unless you're an experienced mechanic.

B0686 Fault Symptoms :

  1. Check engine light comes on
  2. Engine stalling or misfiring
  3. Engine performance issues
  4. Car not starting
If one of these reasons for B0686 code is occuring now you should check B0686 repair processes.
Now don't ask yourself; What should you do with B0686 code ?
The solution is here :

B0686 Possible Solution:

B0686 Engine

Disconnected, dirty or fouled spark plugs are common causes for engines that won't start. Spark plugs typically need to be replaced every season or 25 hours of use. You should also check that the spark plug gap is set properly. If your spark plugs look good, problems with your ignition system can also preventing a spark. These can range from a faulty spark plug lead, shorted kill switch or flywheel key damage.

B0686 Code Meaning :

B 0 6 8 6
OBD-II Diagnostic Body (B) Trouble Code For Engine Intake Valve Control Solenoid Circuit Low Fuel Temperature Sensor B Circuit Range/Performance Ignition/Distributor Engine Speed Input Circuit Malfunction Ignition Coil A Primary/Secondary Circuit Malfunction

The catalytic converter has an oxygen sensor in front and behind it. When the vehicle is warm and running in closed loop mode, the upstream oxygen sensor waveform reading should fluctuate.

B0686 OBD-II Diagnostic Body (B) Trouble Code Description

B0686 engine trouble code is about Ignition Coil A Primary/Secondary Circuit Malfunction.

Main reason For B0686 Code

The reason of B0686 OBD-II Engine Trouble Code is Fuel Temperature Sensor B Circuit Range/Performance.

B0686 the main thing to check is to verify the operation of the VCT solenoid. You're looking for a sticking or stuck VCt solenoid valve caused by contamination. Refer to vehicle specific repair manual to perform component tests for the VCT unit.