P0332 refers to a fault involving KS2, which is located on the passenger side of the engine. There is a test procedure in the Workhorse manual starting on page 6-401 which will require that you have a scanner, DMM, and possibly a few other diagnostic tools at your disposal.
In a nutshell, the MIL is set when the PCM detects a frequency that is less than or more than a defined range, DTC P0327 will set for a failure in knock sensor (1) which is located on bank 1 on the drivers side of the engine
or DTC P0332 will set for a failure in knock sensor (2) which is located on bank 2 on the passenger side of the engine; and the PCM determines that this frequency is less than or more than the expected amount for 3 seconds or more. The control module illuminates the malfunction indicator lamp (MIL) on the second consecutive ignition cycle that the diagnostic runs and fails.
The control module turns OFF the malfunction indicator lamp (MIL) after 3 consecutive ignition cycles that the diagnostic runs and does not fail.
Check the knock sensor for proper installation. A knock sensor that is loose or over torqued may cause either DTC to set. As always with all of this electronic stuff, make sure all of the connectors to the sensor and PCM are clean and tight.
If the sensor is not loose or over torqued, there is a test procedure that can be accomplished, but the net result is that either the knock sensor or the PCM ends up being replaced.
It would be helpful to know the year of the coach, putting this info into your signature is recommended. If you really want to do your own maintenance purchasing the Workhorse service manual, a good code scanner, and DMM will be money well spent.
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2003 Pace Arrow 36B, W22 Chassis
Ultrapower ECM upgrade, CAI, Wires, Koni FSD