Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Misfire Monitor Specifications
Misfire Monitor Operation: DTCs P0300 to P0310 (general and specific cylinder misfire), P1309 (no cam/crank synchronization, AICE chip malfunction), P1336 (no cam/crank synchronization), P0606 (AICE chip malfunction), P0315 (unable to learn profile), P0316 (misfire during first 1,000 revolutions after start-up). The monitor execution is continuous, misfire rate calculated every 200 or 1000 revolutions. The monitor does not have a specific sequence. The CKP and CMP sensors have to be OK to run the monitor. The monitoring duration is the entire driving cycle (see disablement conditions below)
Typical misfire monitor entry conditions: Entry condition minimum/maximum time since engine start-up is 0 seconds, engine coolant temperature is -7°C to 121°C (20°F to 250°F), RPM range is (full-range misfire certified, with 2 revolution delay) 2 revolutions after exceeding 150 RPM below drive idle RPM to red-line on tach or fuel cutoff, profile correction factors learned in KAM are Yes, and the fuel tank level is 15%.
Typical misfire temporary disablement conditions: Temporary disablement conditions: Closed throttle deceleration (negative torque, engine being driven), Fuel shut-off due to vehicle-speed limiting or engine-RPM limiting mode, and a high rate of change of torque (heavy throttle tip-in or tip out)
The Profile Learning operation includes DTCs P0315 - unable to learn profile in 3 97 to 64 km/h (60 to 40 mph) decelerations and P1309 - AICE chip communication failure; Monitor Execution is once per KAM reset; The Monitor Sequence: Profile must be learned before the misfire monitor is active; The CKP and CMP sensors are required to be OK; AICE communication errors, CKP/CMP in synch. The Monitoring Duration is 10 cumulative seconds in conditions (a maximum of 3, 97 to 64 km/h (60 to 40 mph) de-fueled decelerations).
Typical profile learning entry conditions: Entry conditions from minimum to maximum: Engine in deceleration-fuel cutout mode for 4 engine cycles the brakes are not applied, the engine RPM is 1,300 to 3,700 RPM, the change is less than 600 RPM, the vehicle speed is 48 to 112 km/h (30 to 75 mph), and the learning tolerance is 1%.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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