Check engine light blinking, car shaking violently, twenty two codes

SHAEMARIE

MEMBER
2005 CADILLAC CTS
3.6L
6 CYL
AUTOMATIC
150,400 MILES

I’ve had this car for about a year. Some months ago the check engine light was on and wouldn’t go off. It finally went off and then I changed the battery and it came back on. I’ve had my rotors and brakes done as well. After my brakes had got done a couple of days ago my check engine light started blinking while I drove and then violently shake. It doesn’t stall it still drives just violently skips and the check engine light blinking. I took it to the Advance part store and they said multiple codes pulled up (22 times to be precise) such as P0305, P0205, P0430, P0455, P0897, u1016, u1000, B0092, and B0029. I have no idea what to do and I want advice before I fork over a lot of money. Please help.

1 Reply

SEVAG P

MECHANIC
405 POSTS

Hello thanks for using 2CarPros.

The main fault code that causes the problem is p0205 injector 5 control circuit,which causes miss fire cylinder 5 appear fault code p0305. as a first step check injector control line (fig 6) between injector pin B color tan/white and control unit connector pin 47 (fig 7)check control unit location(fig 8), check for open circuit and resistance if the wire is good,swap injector with other cylinder if the fault still the same then the injector is good problem can be from bad engine control unit.
for complete diagnosis step by step check the fig 1,2,3,4,5 for trouble shooting.
check our guide for wiring test:
https://www.2carpros.com/articles/how-to-check-wiring
let us know whats happens with you.
thank you.

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