Loud bang and noise running check engine Codes p0106 p2195 p2197 p0316 p0304

Question

2004 Ford Freestar - sudden explosion check engine light codes and loud banging but engine still runs roughly. What could have happened?

Codes showing
P0106
P2195
P2197
P0316
P0304

Answer 1

Of all the codes you have, P0304 is the most important. This engine code indicates a misfire in the #4 cylinder. Unfortunately, several factors could trigger this code, such as a faulty spark plug, ignition coil, fuel injector, or even carbon buildup inside the cylinder. A good starting point would be to replace the spark plug. It's likely that the other codes are triggered as a result of the cylinder misfire.

Here are the links to the all code pages for more information:

P0106 Ford Code - Manifold Absolute Pressure/Barometric Pressure Sensor Range/Performance
Read more: https://www.autocodes.com/p0106_ford.html

P0304 Ford Code - Cylinder 4 Misfire Detected
Read more: https://www.autocodes.com/p0304_ford.html

P0316 Ford Code - Misfire Detected On Startup First 1000 Revolutions
Read more: https://www.autocodes.com/p0316_ford.html

P2195 Ford Code - Oxygen Sensor Signal Biased/Stuck Lean Bank 1 Sensor 1
Read more: https://www.autocodes.com/p2195_ford.html

P2197 Ford Code - Oxygen Sensor Signal Biased/Stuck Lean Bank 2 Sensor 1
Read more: https://www.autocodes.com/p2197_ford.html