Thread: Nanocom drive cycle nightmare (motronic)

Hi all, long time browser — more active on a separate LR site.
I’m running into a problem and hoping to get some insight from the folks here, as my usual forum has come up empty.

I’m located in California USA, so require emissions testing.

I can’t get my monitors to set despite completing the drive cycles that my nanocom is telling me to complete.

I’ve got a check engine light on, and my nanocom is showing the code

“Air flow to throttle angle cross check fault drive cycle B - occurred <some number> times - fault is currently present”

Based on RAVE, drive cycle B should be:

1 Switch ignition on for 30 seconds .
2 Ensure engine coolant temperature is less than 60 degrees C (140 degrees F) .
3 Start the engine and allow to idle for 2 minutes .
4 Perform 2 light accelerations (0 to 35 mph (0 to 60 km/h) with light pedal pressure).
5 Perform 2 medium accelerations (0 to 45 mph (0 to 70 km/h) with moderate pedal pressure).
6 Perform 2 hard accelerations (0 to 55 mph (0 to 90 km/h) with heavy pedal pressure).
7 Allow engine to idle for 2 minutes .
8 Connect TestBook and with the engine still running, check for fault codes.

However I’ve completed that drive cycle for what feels like a thousand times. All while keeping the fuel level between 1/4 and 3/4 full. And yet my purge test and o2 monitors (the sensor, not the temperature — that one has completed just fine) aren’t setting.

Are there any nanocom experts who might know what’s going on? Could it be that I should be doing a different drive cycle despite it telling me to complete B?

Thanks in advance.

Originally Posted by discohead

Thank you! I'll get a cheap reader and see what it comes back with. I had a strong suspicion about the TPS earlier and bought one from amazon. I learned that most aftermarket sensors are junk -- they don't connect well to the wiring harness. Talked with the guy at rovers north here in the states and he told me that you've gotta go with the Bosch despite it being $$$$.

Better try with a genuine used one which is under warranty as being in good working order, you should find on ebay USA, many of them in UK