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Author Topic:   Code P1131 and P1443
papaton
Junior Member
posted 08-05-2006 11:37 AM     Click Here to See the Profile for papaton     Edit/Delete Message   Reply w/Quote
I have a 96 Mazda B3000. Failed inspection test. Replaced DPFE and that deleted the P0401 and P0402 for now. I drove vehicle home after replaced part about 10 miles and codes P1131 came back on as well as the P1443 returned. I have cleaned and check vacuum lines and other sensors per Chilton repair manual. Previously I cleaned out all of the sensors and the P1443 went away but it came back today on the way home from replacing the DPFE. Also checked systems to see if they are ready for inspection using actron scanner and the Catalyst system continues to say not ready. Any help or advise on what to fix to clear the 1131 and 1443 and why the catalyst system is not ready. I need advise soon because truck needs to pass inspection.

[This message has been edited by papaton (edited 08-05-2006).]

[This message has been edited by papaton (edited 08-06-2006).]

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papaton
Junior Member
posted 08-07-2006 09:22 AM     Click Here to See the Profile for papaton     Edit/Delete Message   Reply w/Quote
I have worked all weekend on this vehicle. I can not find what could be causing the problem. I took it to be inspected because it is out. I thought that the garage would be able to show me the problem. They only showed me that I had codes P1131 and P1443 stored in the system and it failed the inspection. If anyone can help me, I would appreciate the help.

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carfixer
Member
posted 08-07-2006 10:58 AM     Click Here to See the Profile for carfixer     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by papaton:
I have worked all weekend on this vehicle. I can not find what could be causing the problem. I took it to be inspected because it is out. I thought that the garage would be able to show me the problem. They only showed me that I had codes P1131 and P1443 stored in the system and it failed the inspection. If anyone can help me, I would appreciate the help.

What all did you do over the weekend? Post exact tests and results.
Those two codes don't even show up in any database. What are they supposed to be for?

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papaton
Junior Member
posted 08-07-2006 08:11 PM     Click Here to See the Profile for papaton     Edit/Delete Message   Reply w/Quote
I have a 96 Mazda B3000 that failed inspection test. I replaced DPFE and that deleted codes P0401 and P0402 for now. I drove vehicle home after replacing DPFE about 10 miles and codes P1131 came on as well as the P1443. According to the scanner, the P1131 refers to fuel and air metering system and the P1443 deals with the EVAP Auxillary Emission Controls. I have cleaned and check vacuum lines and other sensors per Chilton repair manual. Previously I cleaned out all of the sensors and the P1443 went away but it came back today on the way home from replacing the DPFE. Also checked systems to see if they are ready for inspection using actron scanner and the Catalyst system continues to say not ready. Any help or advise on what to fix to clear the 1131 and 1443 and why the catalyst system is not ready.
Whe I took the vehicle for an inspection test today, the statement shows that all systems passed including the catalyst except the MIL Commanded on which is a result of these two codes being stored in the system. Any help is appreciated.

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carfixer
Member
posted 08-08-2006 08:29 AM     Click Here to See the Profile for carfixer     Edit/Delete Message   Reply w/Quote
Unfortunately what you did was a visual inspection and not actual testing. This is OK, but we need to get some actual testing results to narrow this down.
I found the codes and associated troubleshooting proceedure. It could be the two codes are related. The canister purge may always be on causing the adaption to go max low (rich condition), but we need to quickly eliminate some things.
You need to check fuel pressure. What is it at idle? Make sure you have an accurate gauge.

[This message has been edited by carfixer (edited 08-08-2006).]

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papaton
Junior Member
posted 08-11-2006 06:17 PM     Click Here to See the Profile for papaton     Edit/Delete Message   Reply w/Quote
I am not ignoring your reply, but I work on 2nd shift and I have not had the chance to work on my truck this week. Since I spoke with you last, I cleaned all of the sensors with an electronic parts cleaner and I cleared the codes. I drove it to work all this week and code P1443 is gone. I am praying it does not return. Work is about 10 miles each way. The code P1131 came back on after 15 miles and I am now working on that code. What are the chances that the MAF sensor is bad. The Voltage reading shows that it is still good.
Could the fuel pressure cause a P1131?

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papaton
Junior Member
posted 08-29-2006 09:30 PM     Click Here to See the Profile for papaton     Edit/Delete Message   Reply w/Quote
Celebrate. I finally got this vehicle to pass inspection. It turns out the 2 codes are separate codes and did not relate to each other. The P1443 disappeared after the purge control valve was replaced. The P1131 disappeared after we replaced the 02 sensor. I went through a process of elimination. Internet websites gave me a list of possibilites and this forum gave me the same information. I went through all of the possiblities from the EGR valves, leaking hoses, air escaping through the intake to MAF sensor. Ford has a TSB and it swears that the problem is the MAF sensor. However, it was not the problem. I took the car to a garage and had them run diagnostics on the car to find the problem and they found that the 02 sensor was not sending voltage. They told us to repair the connector to the 02 sensor because whomever owned the vehicle before had sliced the connector and rewired it. I picked up a connector from a salvage yard and repaired it. The light came back on. I went to Auto Zone and purchased an O2 sensor and the light is gone and the vehicle passed inspection. I have worked on this vehicle for 2 months and when it passed inspection, I felt like shouting. Thanks to everyone for thier input.

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