Engine Error Code P0420?
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Senior User
Joined: Oct 2004
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OK, I cleared the code and the engine light came back on after about 2 days of regular driving.
This is the what my engine shows at normal operating temperature:
O2S
At Idle 680 RPM/ 1500 RPM
B1 S1 0.305 /0.720
B1 S2 0.130 /0.115
B2 S1 0.780 /0.380
MAF:
0.775 /2.152
Any suggestions?
This is the what my engine shows at normal operating temperature:
O2S
At Idle 680 RPM/ 1500 RPM
B1 S1 0.305 /0.720
B1 S2 0.130 /0.115
B2 S1 0.780 /0.380
MAF:
0.775 /2.152
Any suggestions?
Senior User
Joined: Apr 2004
Posts: 443
Likes: 1
From: Central Va.
If you are not concerned that the cat is not doing what it is designed to do, install a MIL eliminater in the oxy. sensor wire harness.Just a jumper harness plugged in between plug to oxy. sensor(fools PCM).The only way I have cured this code and it stayed away was to replace the cat OR if Ford has an update for this code-reprogram PCM to latest calibration.96 was the first year for OBDII and don't recall ever having a TSB For updateing PCM to cure a P0420.(did alot of Crown Vics though) Google MIL eliminater for more info! lol Blue
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Senior User
Joined: Oct 2004
Posts: 188
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Originally Posted by Trublufords
If you are not concerned that the cat is not doing what it is designed to do, install a MIL eliminater in the oxy. sensor wire harness.Just a jumper harness plugged in between plug to oxy. sensor(fools PCM).The only way I have cured this code and it stayed away was to replace the cat OR if Ford has an update for this code-reprogram PCM to latest calibration.96 was the first year for OBDII and don't recall ever having a TSB For updateing PCM to cure a P0420.(did alot of Crown Vics though) Google MIL eliminater for more info! lol Blue
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