This morning, my dash lit up like a Christmas tree. The Check engine, VSC, traction stability all turned on. I ran to the shop and here's what it shot back. I've been reading online that the C1201 code is a safety feature that turns on so it doesnt destroy the car and will turn off once I fix the real problem. Can someone please help point me in the right direction? Hopefully, all these codes will narrow down the problem so I'm not buying parts needlessly.

Its a 2008 RX350 with 116,000 miles on it.


Code C1201 - Engine Control System Malfuction

Code C1223 - Malfunction in Antilock Brake System Control System.

U0123 - Lost communication with the Yaw Rate Sensor Module

U0124 Lost Communication with the Lateral Acceleration Sensor Module

U0126 - Lost communication with the Steering Angle Sensor Module.

P0352 - Ignition Coil B Primary/Secondary Circuit Malfunction

P0300 - Multiple Misfire Detected.

P0301 thru P0306 - Cylinders 1 - 6 Misfire detected.

 

Please check battery first before you start other diagnostic. One time have so many codes should be bad battery.

 

Check battery first like previous poster said absolutely.
If that doesn't work, check your gateway module.
It works with the high speed Can Bus.
That's all I know- I remember reading thru the electrical schematic that the Can High and Can low directly communicates with the Yaw and those other items thru the gateway module.
If your car ran good before I agree with previous poster.

 

When these cars pop a code, they like to regurgitate a whole bunch of them. This is what my car did to me -

P0300 P0301 P0302 P0303 P0304 P0305 P0306

C0215 C1201 C01223

U0073 U0123 U0124 U0125

My problem? A failing coil on cylinder 5. Based on my experience, I would suggest the op check ignition coil #2. Swap it with cylinder 4 or 6, clear the codes and see if the P0352 changes to the other cylinder.