EMERGENCY? inverter coolant pump failure (P0A93)

[Gaujo]

I'm 240 miles from home and this code is kicking in my 05. Had same code before and a new inverter coolant pump was the fix, but that was in town... Is this an emergency that I should have fixed at the nearest dealership, or should I just have it done when I get home?

-A/C cut out (just blowing hot air)
-cruise control cut out.

Appreciate any opinions here! Nervous about doing serious damage.

[JimN]

Originally Posted by Gaujo

I'm 240 miles from home and this code is kicking in my 05. Had same code before and a new inverter coolant pump was the fix, but that was in town... Is this an emergency that I should have fixed at the nearest dealership, or should I just have it done when I get home?

-A/C cut out (just blowing hot air)
-cruise control cut out.

Appreciate any opinions here! Nervous about doing serious damage.

Presuming the code was cleared & has now reappeared I'd find the closest dealer & talk to them. I suspect air was not purged from the inverter coolant or the coolant is low. Get it fixed now before any real damage is caused.

[Patrick Wong]

Originally Posted by Gaujo

I'm 240 miles from home and this code is kicking in my 05. Had same code before and a new inverter coolant pump was the fix, but that was in town... Is this an emergency that I should have fixed at the nearest dealership, or should I just have it done when I get home?

-A/C cut out (just blowing hot air)
-cruise control cut out...

You definitely need to have your car looked at now as it is unlikely the car will make a 240 mile highway trip in summer weather without failing along the way. The symptoms you posted make it sound like the inverter is overheating again.

While waiting for your service visit, I suggest you make the car IG-ON (not READY, where all the dashboard warning lights are on) and see if you can:

1) hear the inverter coolant pump running, located behind the driver's headlamp assembly. If no, the pump is the problem. If yes,

2) do you hear air bubbles in the system? (that would mean that air is in the system and needs to be purged out)

3) You can also look at the inverter coolant reservoir to see if there is turbulence in the fluid. If yes, that shows you have good coolant circulation, and the problem is not due to the inverter coolant pump.

[HTMLSpinnr]

I had this same error at 101k miles and it didn't clear. As the inverter began to overheat, I began to lose functionality, beginning with A/C, then moving to primary braking (hydraulic back-up only which is not balanced and easy to lock the wheels), the car began to surge, and eventually shut down (in an intersection no less).

Don't do as I do - get to a dealer if it persists. I was lucky to not damage the inverter long-term (or so we hope, it was 18k miles ago). Better safe than sorry (and broke).