'08 Alpha. Headed for work yesterday morning, and suddenly got the "AC OFF" message on the DIC and the temperature gauge went dead. Fired up my Torque app, and temps were fine, albeit a bit low (it was in the 40s outside, and I was only a few miles down the road). Watched my Torque app and the engine temps came up to normal (+/- 190), but the temp gauge never started working, nor did the AC. No set codes, but I did have a "Pending" code of P0128.
Got to work and did a few internet searches here and elsewhere; seems to be the general consensus that the temp sender or the thermostat is the likely culprit. Since the actual engine temps came up fine, I'm leaning toward the sender. Cleared the "Pending" code (it never went past "pending", and I never got a CEL), and things went back to normal, so far.
But here's what has me confused. Why was the temp gauge dead when the ECM/BCM was back to clearly reporting normal temps to the Torque app? I don't believe that there are 2 temp senders. My thought is that the sender had an intermittent malfunction, triggering the ECM/BCM to shut down the A/C and the gauge, but then started to work fine again. However, the initial triggered event caused the gauge and A/C to remain disabled, even after the sender was back to normal, until the pending code P0128 was actually cleared. Sound logical? :huh:
Got to work and did a few internet searches here and elsewhere; seems to be the general consensus that the temp sender or the thermostat is the likely culprit. Since the actual engine temps came up fine, I'm leaning toward the sender. Cleared the "Pending" code (it never went past "pending", and I never got a CEL), and things went back to normal, so far.
But here's what has me confused. Why was the temp gauge dead when the ECM/BCM was back to clearly reporting normal temps to the Torque app? I don't believe that there are 2 temp senders. My thought is that the sender had an intermittent malfunction, triggering the ECM/BCM to shut down the A/C and the gauge, but then started to work fine again. However, the initial triggered event caused the gauge and A/C to remain disabled, even after the sender was back to normal, until the pending code P0128 was actually cleared. Sound logical? :huh:
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