Drive Cycle to Clear CC & EV Monitors "Not Ready"
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Drive Cycle to Clear CC & EV Monitors "Not Ready"
My car is a 2004 XJ8 without the supercharger. It started with code P0193. I changed the fuel pressure sensor with the equivalent Ford part and it was OK for a few months then failed again. I replaced it with an OEM sensor and it has been OK ever since. The only problem is that no matter how much I drove the car I could not get the CC & EV monitors to go to the ready state. I only had a simple code reader so I was unable to troubleshoot very deep. I tried several drive cycles that I found in here to no avail. Eventually, I combined some steps from different drive cycles and was able to clear the codes. Here is what I came up with:
The engine needs to sit overnight and be completely cold. You need to have access to a stretch of road that will allow you to drive for 10 minutes at about 65 mph and a big enough shoulder to allow the car to coast to a stop.
Bret
The engine needs to sit overnight and be completely cold. You need to have access to a stretch of road that will allow you to drive for 10 minutes at about 65 mph and a big enough shoulder to allow the car to coast to a stop.
- Start the engine and let it idle for 15 minutes. I did not have any accessories running during the 15 minutes.
- Set the parking brake
- Select each position on the shifter and leave it there for 10 seconds in each position.
- Begin driving to your test area.
- I shifted manually and allowed the engine to reach 3,500 ~ 4,000 RPM for a minimum of 5 seconds in 2nd and 3rd gear on my way to the stretch of road I was going to drive on.
- Once I got to the stretch of road I shifted manually again like before and then set the cruise to 65 MPH for 10 minutes.
- I cancelled the cruise control and allowed the car to slow down on its own. I eventually had to shift to Neutral to come to a stop with very gentle braking.
- Idle for 3 minutes.
- Shut engine off for 30 seconds.
- Start engine and shift manually to get over 3,500 RPM then set the cruise at 65 MPH again for 10 minutes.
- Coast to a stop like before.
- Idle for 3 minutes.
- Engine off for 30 seconds.
- Check the monitors. If they aren't off, do this again the next day. The engine has to be completely cold for some reason before you begin the drive cycle.
Bret
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gshyne
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12-21-2014 03:25 PM
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