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12-20-2006, 04:03 PM | #1 | |
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1996 Sable - EGR insufficient flow and bank 1 O2 sensor
My CEL is on OBDII reader shows O2 sensor failure bank one and insufficient flow EGR
I had some preliminary checks done - the EGR valve is good and tubing not carboned up. These parts are on back (firewall) side of engine - Can anyone tell me how much work it will bee to access these to replace? Thanks! |
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12-20-2006, 04:20 PM | #2 | ||
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Re: 1996 Sable - EGR insufficient flow and bank 1 O2 sensor
Quote:
Codes do not say replace parts. What was the code no. Egr problems can be in the DPFE sensor or feed pipe or Intake ports stopped up. What engine and what codes?
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12-22-2006, 07:55 AM | #3 | |
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Re: 1996 Sable - EGR insufficient flow and bank 1 O2 sensor
Here are the codes
P0135 O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 1) P0401 Exhaust Gas Recirculation Flow Insufficient Detected I do not know if there are more specific mfg/proprietary codes to narrow these down further? Don |
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01-31-2007, 04:22 PM | #4 | |
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Re: 1996 Sable - EGR insufficient flow and bank 1 O2 sensor
I replaced the O2 sensor - accessed it from top of engine after removing cabin air intake cowl/duct and coil pack. Bit of a pain with straight wrench - needed offset open end wrench.
Found out that who-ever installed pevious sensor wasn't very careful the wires were twisted with damaged insulation and external center 'barrel' of sensor was bent. |
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02-11-2007, 10:51 PM | #5 | |
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Re: 1996 Sable - EGR insufficient flow and bank 1 O2 sensor
i had same codes on my '01 and it was the dpfe sensor. if the codes come back, replace the sensor - it's a snap.
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02-13-2007, 01:04 PM | #6 | |
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Re: 1996 Sable - EGR insufficient flow and bank 1 O2 sensor
I chnged the sensor - code came back in a week, re-set code and it came back on again in 9 days.
Plan to look at it again this sATURDAY - aNY SUGGESTIONS OF WHERE TO LOOK? dON |
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02-13-2007, 02:24 PM | #7 | ||
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Re: 1996 Sable - EGR insufficient flow and bank 1 O2 sensor
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What code and what engine?
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02-13-2007, 10:09 PM | #8 | |
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Re: 1996 Sable - EGR insufficient flow and bank 1 O2 sensor
More than likely you have a failing catalytic converter. You can just purchase a catalytic converter http://autopartswarehouse.com/ and have someone at a welding shop remove the defective catalytic converter and put the new catalytic converter ($50) Free shipping over $50.
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02-14-2007, 08:34 AM | #9 | ||
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Re: 1996 Sable - EGR insufficient flow and bank 1 O2 sensor
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engine druatec 3.0 DOHC |
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02-14-2007, 08:35 AM | #10 | ||
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Re: 1996 Sable - EGR insufficient flow and bank 1 O2 sensor
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Don |
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02-14-2007, 08:51 AM | #11 | |
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Re: 1996 Sable - EGR insufficient flow and bank 1 O2 sensor
Most newer vehicles have two O2 sensors. One upstream (before the cat) and one downstream (after the cat). If the cat honey combs is broken apart inside, it could allow the exhaust to get past the cat faster and O2 sensor upstream will not be able to monitor properly or report insufficient gas/exhaust/02 mixture. If you got two cats then you got four O2 sensors as well. On mine over time after seeing 02 code and replacing the 02, I listened underneath the vehicle and I could hear the metal inside on one of the cat rattling and I have it replaced and it fixed the 02 code.
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02-14-2007, 08:57 AM | #12 | ||
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Re: 1996 Sable - EGR insufficient flow and bank 1 O2 sensor
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02-14-2007, 09:06 AM | #13 | ||
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Re: 1996 Sable - EGR insufficient flow and bank 1 O2 sensor
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The next most common problem is the DPFE sensor or hoses to to. If the old silver one remove it and look for a lot of corrosion where the exhaust pressure line go into it. If stopped up or dirty in there you might as well replace it. And check for a recall or updated black plastic one. MT
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02-14-2007, 09:51 AM | #14 | ||
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Re: 1996 Sable - EGR insufficient flow and bank 1 O2 sensor
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the O2 sensor upstream (heater circuuit) code is gone Just the EGR insufficient flow 0401 code now. I do have trouble seeing how cat could effect either It won't effect the composition of gas they are exposed to it could effect backpressure which should increase, not decrease EGR flow - right? |
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02-16-2007, 06:02 AM | #15 | |
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Re: 1996 Sable - EGR insufficient flow and bank 1 O2 sensor
Plugged up cat = increase backpressure
Broken honey comb inside the cat = less than normal backpressure working cat = normal within range backpressure |
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