kidcamaro98

iTrader: (8)

So im borrowing my friends HP tuners and I start scanning and all these codes come up. C0240,C0237,U1000,U1016...theirs no SES light for them either...I clear them, refresh it and they pop right back up.

U1000 is Class 2 communication malfunction
U1016 is comething like VCM communication malfunction

C0240 is something about rear wheel speed sensor malfunction and im not sure what C0237 is without scanning my car again but they arent in the DTC list.

what are these? should I be worried? without scanning my car I wouldnt have noticed these codes...it runs/drives fine

JonCR96Z

iTrader: (33)

Sometimes you'll get those U1xxx codes from scanning or tuning. Nothing to worry about. And the Cxxxx codes aren't controlled by the PCM. Which is why you can't clear them

kidcamaro98

iTrader: (8)

ok thanks lol...I just have never seen/heard of them before so I was a bit skeptical on what they were.,

MUSTANGBRKR02

iTrader: (91)

so how would you clear them?

JonCR96Z

iTrader: (33)

Maybe a Tech2? Why would you need to clear them?

MUSTANGBRKR02

iTrader: (91)

because i think the c0237 is why my service vehicle light is on.

Frost

iTrader: (45)

c0237 is rear wheel speed erratic.

It's physical and it's real. It's an intermittent or a break in the output from that sensor that has exceeded something like 5mS in time (maybe 15, been a while).

I have had to run new wires from the PCM to the sensor to get rid of this before. Once (JUST once) it was the fault of the sensor.

MUSTANGBRKR02

iTrader: (91)

Where is the sensor at on the car? On a side not i gt a new pigtail on the TPS and probelm fixed for that one.

pHEnomIC

iTrader: (14)

I get the first two all the time, i think its normal.