ok i have a 2000 saturn sl1 and one day i was driving and it began to over heat! the next day it started right up and i drove it to work after work it wouldn't start.


i hooked my car up to a diagnostic system and it says i have a secondary air injection malfunction code p0410


and also and 02 sencor circut high voltage! bank 1 sencor 2 code p0138......


i have read the haynes repair manual and it doesnt help! can anyone help! thank you jenn

 

P0410 Secondary air injection malfunction

No personal experience with this one, but, based on a quick web search, if the air pump is operational, I'd start by replacing the Engine Coolant Temp Sensor (ECTS) and connector (Saturn only part).

A bad ECTS will usually cause the PCM to think the coolant temp is at -40. This causes the PCM to compensate by making the air fuel mix way too rich.

The sufficiently rich mix is probably what is triggering the P0138, which, as it turns out, is triggered by the rear 02 sensor putting out a consistently "too rich" signal......

Try ECTS swap first, clear codes, and see if the P0138 returns. Hopefully it will not.

Keep us posted

Derf