TwoZ's

Will aftermarket rockers arms cause the SES light to come on?

blind527

I don't see how they would.

matt65

I had read somwhere here that the roller rockers may cause the knock module to detect what is false knock from the roller rockers. May be worth searching for. This would remove timing, SES light?..... I dont know.

Below are related generic codes related to knock sensor. Try pulling the code to see what code it is.

P0325 Knock Sensor 1 Circuit Malfunction (Bank 1 or Single Sensor)
P0326 Knock Sensor 1 Circuit Range/Performance (Bank 1 or Single Sensor)
P0327 Knock Sensor 1 Circuit Low Input (Bank 1 or Single Sensor)
P0328 Knock Sensor 1 Circuit High Input (Bank 1 or Single Sensor)
P0329 Knock Sensor 1 Circuit Intermittent (Bank 1 or Single Sensor)
P0330 Knock Sensor 2 Circuit Malfunction (Bank 2)
P0331 Knock Sensor 2 Circuit Range/Performance (Bank 2)
P0332 Knock Sensor 2 Circuit Low Input (Bank 2)
P0333 Knock Sensor 2 Circuit High Input (Bank 2)
P0334 Knock Sensor 2 Circuit Intermittent (Bank 2)

Also, The year of your car may help with answers.

Bud M

Mine never have

pHEnomIC

maybe they are just a little louder, perhaps you messed with the valve lash and had it wrong but.... Get the lt4 knock module, it might help and you should have it anyway w/ no cats and headers if you have them.