Question about 1999 Saturn SL

2 Answers

I have a 1999 Saturn SL2 that has a check engine light on and the code is P0401 I have checked the egr and had the passage way cleaned replaced the catalytic converter and map sensor whats next

Posted by on


2 Answers

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

I have a 1999 SL2 Sature with a fault code saying "Secondary Air Injection System Malfunction", Code P0410. What component does that refer to? Please advise.

Posted on May 09, 2011

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Expert
  • 693 Answers

If replaced everything you have to reset your ecm" computer" This will clear out the codes that was showing. If there is still a problem it will comeback up. To do this corectly might run by a dealer, Shoulnt cost just a few bucks. Good luck to you.

Posted on Apr 04, 2011


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

A 6ya expert can help you resolve that 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.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Good luck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%


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



Related Questions:

1 Answer

2002 Saturn SL2 P0301 and P0410

Here's a link on your P0301 code. P0301 OBD II Trouble Code Here's the link for the P0401 code. P0401 Saturn Exhaust Gas Recirculation Flow Insufficient your egr passage may be blocked.

Jun 29, 2017 | Saturn Cars & Trucks

2 Answers

P0401 error code

Depending on your Year and Model, there are some more prone to this Code than others because of the material used in the intake manifold. Ford and its affiliates switched from Aluminum to Plastic to prevent sooting.

On the old style 4.6L a passage under the Airhorn would clog and prevent EGR flow. Bad EGR flow is a Code 401. It can be a Solenoid valve failing to open, but many times it is a clogged passage as I mentioned. Sometimes a bad EGR has a ruptured diaphragm which can be checked by drawing the Vacuum out of it.

For those engines a simple $10 gasket and removal of 8 screws will allow you to scrape out the valley the passage is in.

So this fix is not real expensive, get parts at common autoparts stores.

Apr 06, 2013 | Ford F-150 Cars & Trucks

1 Answer

1999 5.4 liter. Check engine light on. Code P0401(EGR too little flow). Runs rough in o/d at 35-45mph, skipping some, terrible gas mileage.

Hi, welcome to my name is Shawn and I will be answering your question.
Two possible causes first a bad DPFE sensor which monitors EGR flow or next clogged EGR ports. Remove the throttle body 4 8mm bolts and a cable then clean the EGR passage out. Clear the code by disconnecting the battery for 10 minutes.

I hope my assistance helped you and resolved your concern, if you need further assistance please ask.

Aug 08, 2011 | 1999 Ford F150 Regular Cab

1 Answer

Check engine light came on 1996 acura slx code reads p0401

Code P0401 indicates insufficient EGR flow. It's quite common on this model. The solution involves removing the upper intake manifold and cleaning the EGR passage.

Apr 16, 2011 | Acura SLX Cars & Trucks

1 Answer

I replaced the egr valve and the check engine light is still on so what do I do the code still says p0401

When you replaced the EGR valve did you check the EGR passage to make sure it wasn't clogged. Since exhaust gasses flow through the EGR passage carbon builds up on the walls restricting flow which can eventually lead to the code p0401 Insufficient EGR flow.

Jan 10, 2010 | 2001 Chevrolet Monte Carlo

2 Answers

Check engine light came on codeP0401

Yes, this is a carbon issue. the EGR valve is very sensitive to carbon deposits. i suggest using pressured air to clean out this throttle body before you purchase another valve. it will keep rejecting the egr if its not cleaned.

Mar 07, 2009 | 1996 Honda Accord

Not finding what you are looking for?
1999 Saturn SL Logo

665 people viewed this question

Ask a Question

Usually answered in minutes!

Top Saturn Experts


Level 3 Expert

79077 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22326 Answers

Jeffrey Turcotte
Jeffrey Turcotte

Level 3 Expert

8836 Answers

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

Answer questions

Manuals & User Guides