Getting an SRT-4 to pass emissions can be a laborious process.  It can be especially difficult if you are experiencing any check engine lights (CEL’s).  Most OBDII cars must go through a process to check all the emissions systems on the car.  This can take a long time depending on the specific car and your driving habits.

If you’ve recently cleared your SRT-4 of CEL’s, you’ll probably need to run readiness codes.  There’s an easy way to check.  Turn your key to the ACC (accessory) position.  If your check engine light comes one and flashes, your car isn’t ready yet.  There are still some systems which are reporting non-readiness.  If the check engine light stays solid, your readiness codes are set.  This doesn’t mean you’ll pass, but you won’t fail because you recently cleared codes.

Below is a list of some of the systems that need to set and what it will take to set them.  This may not be all of them, readiness codes aren’t exactly a science:

Enabling Conditions—The following conditions must typically be met for the PCM to run the oxygen sensor monitor:

• Battery voltage
• Engine temperature
• Engine run time
• Engine run time at a predetermined speed
• Engine run time at a predetermined speed and throttle opening
• Transmission in gear (automatic only)
• Fuel system in Closed Loop
• Long Term Adaptive (within parameters)
• Power Steering Switch in low PSI (no load)
• Engine at idle
• Fuel level above 15%
• Ambient air temperature
• Barometric pressure
• Engine RPM within acceptable range of desired idle
• Closed throttle speed

Enabling Conditions—The following conditions must typically be met before the PCM runs the catalyst monitor. Specific times for each parameter may be different from engine to engine.

• Accumulated drive time
• Enable time
• Ambient air temperature
• Barometric pressure
• Catalyst warm-up counter
• Engine coolant temperature
• Accumulated throttle position sensor
• Vehicle speed
• MAP
• RPM
• Engine in closed loop
• Fuel level

Post up your experiences getting your SRT-4 to pass emissions below.