DTC B1409 Dodge
Multiple Engine Misfire Detected
Multiple Engine Misfire Detected
Description
DTC P0101-P0103, P0116-P0118, P0121-P0123, P0125, P0335, P0336, P0341-P0343, P0500-P0503 and P1258 not set, engine speed from 450-3000 RPM, system voltage over 10.0v, ECT sensor from 19-230°F, fuel level over 10%, TP angle steady (1%), ABS and Traction Control inactive, ABS signal not indicating rough road thresholds, transmission not shifting, A C clutch stable, AIR Test and DFCO off, and the PCM detected a crankshaft speed variation in two or more cylinders characteristic of a misfire condition. Note: If the misfire is severe, the MIL will flash on off on the 1st trip!
Cause and Solution
Base engine mechanical fault that affects one or more cylinders Fuel metering fault that affects more than one cylinder Fuel pressure too low or too high, fuel supply contaminated EVAP system problem or the EVAP canister is fuel saturated EGR valve is stuck open or the PCV system has a vacuum leak IC control circuit is shorted to ground (an intermittent fault) Ignition system fault (a coil) that affects more than one cylinder MAF sensor contamination (it can cause a very lean condition)
Video Guide
Diagnostic Info
- DTC Code: B1409
- Brand: Dodge