Anyone know what C2100, C2105, and C2120 means? Brief description notes some TPM sensor malfunction. THe dealer did recently replace the outside temp sensor...

Thank you!


[Modified by sbkim, 8:13 PM 9/21/2002]

 

Do these codes have an H after them or a C?

The first 2 codes indicate a problem with the front right and left tire pressure sensor and the C2120 indicates a general failure of the Tire pressure Monitor System. If the codes are H and you get pressure readings on all 4 tires I wouldn't worry about it. You can clear the codes or wait 50 ignition cycles and they will clear themselves. If you don't have tire pressure readings on the DIC and have a C after the codes the dealer caused a problem that isn't going to fix itself when they put the new temperature sensor in.

As I am typing this I am thinking you may need to retrain the sensors if you still have the C after the codes you described. You might want to try the following beofre you go back to the dealer. Again this is only if you have a "C" after the trouble codes and/or you geeting bad tire pressure readings on your DIC.
To train the sensors you need a strong (preferably u-shaped or circular) magnet.
1. Turn key to ON (don't start the car)
2. Press the DIC RESET button to clear any warning messages, if they are present.
3. Press the OPTIONS button and cycle through the menu until the display goes blank.
4. Press and hold the RESET button until FOB training appears on the display.
5. Press the OPTIONS button once and the Tire Training message should appear.
6. Press the RESET button once, and the Learn Left Front Tire message appears.
7. Hold a magnet over the Valve Stem on left front wheel. You may have to move it around the valve stem to hit the right spot.
8. When the horn beeps (about 5 sec. later), programming is complete for THAT wheel.
9. Program the other 3 wheel sensors as directed by the DIC message display. The sequence is as follows: L Front, R Front, R Rear, L Rear.
You only have about 30 seconds, I believe, to train each tire. If the sensor isn't reset in that time, the training program shuts back down.
If your sensor isn't reading the pressure correctly, this procedure will not help. You can try letting out almost all of the air in the tire and refilling it. Sometimes that clears the sensors. If not, the sensor probably needs to be replaced.

 

Rich,

You are a good man! I really appreciate you taking time out to help me out! I owe you a beer next time I am in Chi town :)

Yes, it's H. And my tire pressures are good.

Thanks!