Diagnostic codes help
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2nd Gear
Joined: Sep 2023
Posts: 2
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From: Douglas , ga
Diagnostic codes help
I have a 1999 F150 2 Wheel Dr. 140000 miles. driving it for 15 years started surging and check engine light came on with the code P0135P0141 PO 155 PO 161P1132 and P1152. The first four are the oxygen sensor heater circuit the last two I’m not sure if I’ve replaced the oxygen sensors and it’s still doing it checked for vacuum leaks. Check the fuses no help.I’m leaning toward the pcm that I had replaced 5 years ago? Don’t want to if I don’t need to $$ any help is greatly appreciated Lou 4.6 v8 again thanks
Last edited by cordoba316; Sep 8, 2023 at 01:10 PM. Reason: More info
Hotshot
Joined: Jan 2004
Posts: 19,760
Likes: 1,079
From: St Louis
Since you have heater circuit fault codes for all four O2 sensors, the most common reason is that you're lost power to that circuit (or portion thereof). If it were the fuse for that circuit, you'd have about another dozen electrical circuit fault codes but that depends on the engine. Check your scan tool to see if it has multiple screens of fault codes and you've only seen the first one.
You need to tell us what engine you have so the correct diagram is looked up.
You need to tell us what engine you have so the correct diagram is looked up.
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