Using scanner to check the Check Engine code. It's P0A9E "Hybrid Battery Te mperature Sensor A Ciruit High". According to a Youtube video, it doesn't l ook that hard to replace the sensor. But a few shops I call (not dealers) a ll say they don't work on it.
Any suggestion is appreciated. Is it really the IMA temperature sensor?
Maybe. Or maybe the battery is overheating. Or maybe there is a connector problem. The fact that it's coming on under a high load would make it more likely that it's actually a battery issue. Still, you can swap out the temperature sensor and see, or you can stick a thermometer in the battery pack.
--scott
Measure the resistance of the sensors and see what they show. The code is telling you one is reading as a higher resistance than it should. So if you check circuit A and it reads 200K but you check circuit B and it shows 100K at the same temperature then you have found the problem.
If it's only happening under high loads I would try unplugging the sensor and plugging it back in a few times. Could simply be that some crud or moisture got in there and caused corrosion which causes the higher resistance.
Thanks Steve and Scott. Unfortunately I have problem finding the way to acc ess this thing. I can't even find a repair manual anywhere on IMA. If you h ave a few pages of the manual, would you scan and post here? (To be honest, my car repair experience was severely outdated. I worked on cars a lot whe n I was a college student many years ago.)
Yong
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