Code Enable Criteria

• Engine speed is 550-5850 RPM.
• System voltage is 9-18 volts.
• ECT is 21-248°F (-6-120°C).
• Throttle angle is steady.
• DTCs P0101, P0102, P0103, P0107, P0108, P0117, P0118, P0121, P0122, P0123, P0125, P0336, P0341, P0502, P0503, P1106, P1107, P1114, P1115, P1121, P1122, P1336, or P1374 are not set.

DTC sets when PCM is detecting a crankshaft RPM variation indicating a misfire sufficient to cause 3-way catalytic converter damage or emissions levels to exceed mandated standard.