Question about 2009 Saturn Aura

1 Answer

How do i fix error code u0100 on my 2009 saturn aura xe?

I had been getting several different error codes for months but not consistent ones. Then one day it died - no crank/no start. I replaced starter, battery, battery cables, battery connections, checked fuses, checked wires, replaced ignition switch and when boyfriend tried to hotwire car it cranked but did not start. Now anti-theft deterrent light is on and my key fob hasnt worked for years and when boyfriend took out the ignition lock he accidentally broke a few copper wires that were behind the ignition lock housing. My dash also says powersteering and service esc, but scanner says u0100. why wont it start? how do I fix it?

Posted by on


1 Answer

  • Level 1:

    An expert who has achieved level 1.

    New Friend:

    An expert that has 1 follower.


    An expert that hasĀ over 10 points.


    An expert whose answer gotĀ voted for 2 times.

  • Contributor
  • 12 Answers

That sounds an awful lot like the ECM is having trouble. Since the model year is nearly 7 years old, it is possible that the ECM is toast or that a wire or two has a corroded connection. Have a look at this information:

Hope this helps.

Posted on Jun 29, 2015



1 Suggested Answer



Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

I have a 2008 Saturn Aura XE and the check engine light is on and the temperature gauge is not working.I checked the coolant bottle again, I filled it yesterday and it is still full.

Your problem is not with the coolant level but most likely the ect engine coolant temp sensor this will explain why the temperature gauge not working. Go to autozone or similar and have vehicle scanned for codes

May 24, 2016 | 2008 Saturn Aura XE

1 Answer

What are the probable causes of DTC P0412?

Code 412 means there is a problem with the Secondary Air Injection Solenoid Relay Control Circuit.
You will probably need a shop manual to get the diagnostic steps for that code.

Dec 19, 2015 | 2009 Saturn Aura XE

1 Answer

How to fix a po411 code

There are lots of reasons for this code. Try Repair for diagnostic flowcharts

Dec 19, 2015 | 2009 Saturn Aura XE

2 Answers

Its me mario and the car sensor in question is 2009 saturn aura xe

What leads you to believe that it is one of those? Are you getting a code or something?

Oct 11, 2015 | Saturn Cars & Trucks

1 Answer

Check engine light comes on for a few days then goes off for a few days, then on again. does not perform any different. Took to mechanic of course light not on then so he could not find any problem. 91,000...

If the engine light comes on there should be a code recorded in the CPU to indicate which sensor is causing a problem. Run fault codes to see if a fault code is recorded

Oct 25, 2013 | 2009 Saturn Aura XE

1 Answer

How do i fix the vtc solenoid valve on my saturn aura 09 2.4liter engine

some times you can change the oil and clear the code at times the solenoid goes bad and it just bolts in if the engine got really sludgy the valve assembly needs replacement a oil flush wouldn't hurt to try

Jul 11, 2012 | 2009 Saturn Aura XE

2 Answers

I have 2009 Saturn Aura XE. My bluetooth was

There is a software update that you will need to have the dealer apply. I had the same problem and it was fixed in 45 minutes.

Jan 20, 2010 | 2009 Saturn Aura

Not finding what you are looking for?
2009 Saturn Aura Logo

405 people viewed this question

Ask a Question

Usually answered in minutes!

Top Saturn Experts


Level 3 Expert

85223 Answers

Jonah Oneal

Level 3 Expert

14092 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22485 Answers

Are you a Saturn Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides