Conditions For Clearing MIL/DTC

PCM will switch the MIL OFF on the third consecutive trip cycle during which the diagnostic has been run and the fault condition is no longer present.
A history DTC P1299 will clear after 40 consecutive trip cycles during which the warm up cycles have occurred without a fault.
DTC P1299 can be cleared using the TECH 2 CLEAR INFO function or by disconnecting the PCM battery feed.