Hondata

I have an 2008 Civic Si that went into limp mode. The VSA and battery light came on so replaced the alternator with one from yard cause battery wasn't charging. After replaced the fuse block with a brand new fuse block from Honda dealer still in limp mode. Replaced battery with a new yellow top optima. Still in limp mode took off junk yard alternator cause battery wasn't charging so put a brand new alternator from AutoZone battery is charging. When the outside temperature is warm the car is fine and not in limp mode as soon as it starts to get chilly out the car goes back into limp mode. Anyone have any suggestions or help I am loosing my mind with my car.

Have you checked the error codes?

Yes we have pulled codes everytime and they have been different everytime. Here are last Friday's codes. As soon as outside temperature warms up it goes out of limp mode and runs like a champ
P0102
P0141
P0340
P1298

Briangess77 wrote: Fri Jun 09, 2017 4:33 am Yes we have pulled codes everytime and they have been different everytime. Here are last Friday's codes. As soon as outside temperature warms up it goes out of limp mode and runs like a champ
P0102
P0141
P0340
P1298

P0102 = "MAF Sensor Circuit Low Voltage"
P0141 = "Secondary HO2S (Sensor 2) Heater Circuit Malfunction"
P0340 = "Camshaft Position Sensor 'A' No Signal"
P1298 = "ELD Circuit High Voltage"

It sounds like you may have a bad connection somewhere in your harness or at the ECU. This does not sound like a FlashPro of software related issue.