07 Cadillac STS AWD 3.6 V6 ABS TC PS disabled

Asked by Wrldvsunivrse Aug 15, 2016 at 07:18 PM about the 2007 Cadillac STS V6 AWD

Question type: Maintenance & Repair

While driving my 07 STS AWD V6 the ABS,
e brake light, and traction control lights
came on and became disabled. The power
steering also is gone and the dash displays
service stability, service traction control,
and service steering. I have pulled the
following ABS codes off the car

C0110 Pump motor circuit malfunction
C0899 Device 1 voltage low
C0281 Brake Switch circuit
C0161 (X2) ABS/TCS brake switch circuit
malfunction
C0550 ECU malfunction

Other codes retrieved are

P1793 Wheel speed signal malfunction
P0856 Traction control input signal
U0121 Lost communication with ABS
system control module.

Any expert advice would be much
appreciated as to whether the ABS control
module is faulty or whether it would be
wiring or faulty sensors. Thanks.

1 Answer

42,415

If I were diagnosing it I'd plug in drive it and read wheel speed (WSS) in real time this is step one.. The cascade of DTC's are from one or two possible malfunctions, many of these are redundant i.e. U0121 of course it lost communication with the module there is a system malfunction. Next clean and clear the codes and check it again.

1 people found this helpful.

Your Answer:

Own this car?

Share your experience with others.

2007 Cadillac STS

Review another car

CarGurus Experts

  • #1
    tenspeed
    Reputation
    680
  • #2
    James Sparrow
    Reputation
    300
  • #3
    Gene Arnett
    Reputation
    270
View All

Know more, shop wisely

Search

Related Models For Sale

Used Cadillac STS-V
8 listings
Used Cadillac CTS
100 Great Deals out of 1,444 listings starting at $1,995
Used Cadillac SRX
108 Great Deals out of 1,810 listings starting at $1,500
Used Cadillac DTS
24 Great Deals out of 345 listings starting at $1,575
Used Cadillac CTS-V
7 Great Deals out of 89 listings starting at $16,997
Used Chrysler 300
276 Great Deals out of 5,093 listings starting at $700
Used Chevrolet Silverado 1500
4,160 Great Deals out of 123,229 listings starting at $1,999
Used Cadillac Escalade
388 Great Deals out of 8,268 listings starting at $2,500
Used Dodge Charger
819 Great Deals out of 14,534 listings starting at $2,500

Used Cars For Sale

2008 Cadillac STS V6 AWD For Sale
4 listings starting at $6,266

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.