mjposner

My 2010 Cayenne threw a P2181 code. car runs and drives fine, blows hot air, the left front fan is working. I live in warm South Florida. I reset code and it eventually cam back. Coolant level is fine. I suspect t-stat.

I have a trip next weekend of 350 miles, am I taking a big chance? I am do for serve is 1,400 miles, so I would like to wait to get both looked at at the same time.

Freeze Frame Log:

Freeze frame information:
------------------
Fuel Status = 0 byte
Engine Load = 55.686 %
Engine Coolant Temperature = 75 °C
Fuel Trim Bank 1 Short Term = 2.344 %
Fuel Trim Bank 1 Long Term = -1.562 %
Fuel Trim Bank 2 Short Term = 4.688 %
Fuel Trim Bank 2 Long Term = -3.125 %
Engine RPM = 1,571 rpm
Speed (OBD) = 86 km/h
Timing Advance = 16.5 °
Intake Air Temperature = 32 °C
Mass Air Flow Rate = 38.54 g/s
Throttle Position(Manifold) = 21.569 %
Run time since engine start = 489 s
Fuel Rail Pressure = 1,533.049 psi
Barometric pressure (from vehicle) = 14.649 psi
Voltage (Control Module) = 13.968 V
Engine Load(Absolute) = 55.686 %
Commanded Equivalence Ratio(lambda) = 1
Relative Throttle Position = 14.902 %
Ambient air temp = 25 °C
Absolute Throttle Position B = 21.176 %
Accelerator PedalPosition D = 32.157 %
Accelerator PedalPosition E = 15.686 %

mjposner

Bueller? No help?

duh

I usually see that code associated with a thermostat sticking open. It says your coolant temp was lower than it expected, 75 c, which would point towards that.

mjposner

Can this wait for about 1,000 miles when my next service is due? car runs great and water temp is stread at 180f

DavieGravy

Absolutely not! Your cayenne running at lower temperature in a hot climate will cause the engine to blow up. I would have it towed to the nearest dealer immediately and have the credit card on hand.

mjposner

Thanks Davie, but it blew up just waiting....