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B3940 Engine Error Code

When you check engine light came on code B3940 the reason should be . However your vehicle's manufacturer may have a different definition for the B3940 OBD-II Diagnostic Body (B) Trouble Code. So you should chech it on your car models.

B3940 Code Symptoms

B3940 Code Reason

Parts or components should not be replaced with reference to only a DTC. The vehicle service manual should be consulted for more information on possible causes of the fault, along with required testing.

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.

B3940 OBD-II Diagnostic Body (B) Trouble Code Description

so you have to check ODB-II Engine Error Code list.

B3940 Code Review :

The reason of B3940 OBD-II Engine Error Code is .

B3940 Code Dictionary Meaning:

b - Body Code - Problem is antilock brake system, electronic suspension and steering systems.
3 - SAE - Generic
9 - Transmission
4 - Control Module Throttle Actuator Position Performance
0 - Transmission Engaged At High Throttle Angle