P1131 code ford f150

I have ford f 4.

P error code. Thread Tools. Hey guys I'm getting the p error on my xlt f 5. I know it's usually a vacuum leak on the pcv hosing, which I did have at the back and replaced as well as other softer joining sections 3 to be exact lol , but I'm still getting this error. Since this is an obvious indication of a lean burning cylinder can I make the assumption my most likely problem is dirty fuel injectors on those cylinders? Yeah yeah I know I'd clean them all lol.

P1131 code ford f150

P at startup. Thread Tools. Likes: Received 9 Likes on 8 Posts. P during warmup. My '99 4. Code P is upstream bank 1 oxygen sensor too lean. The code will persist for a few weeks, then it will go away for a few weeks. Change in state seems to coincide with filling the tank with gas. I replaced the gas cap and am careful to fully seat it. Engine runs fine: no issues starting, smooth idle, MPG. The CEL comes on 5 minutes after I start the engine. P is the only code. If I clear the code. If I shut it down, let the engine cool, and restart, it returns.

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The error code P is displayed by getting feedback from the Lambda or the oxygen sensor. The Lambda sensor is responsible for detecting the amount of oxygen in the exhaust gases. Based on that, the PCM Powertrain Control Module manipulates whether the engine is running on a lean or rich fuel mixture. A lean running condition of the engine happens when the engine runs on less fuel or too much air , ultimately resulting in the error code P on Ford vehicles. An engine running on a lean mixture, may lead to sluggish acceleration and reduced fuel economy. Thus it becomes crucial to understand the P on Ford Vehicles and ways to resolve this error code.

P1131 code ford f150

P is a diagnostic trouble code that applies to vehicles manufactured by Ford, including the F Trouble codes that start with P1XXX were reserved for manufacturers. This code occurs when the upstream O2 sensor on bank 1 fails a diagnostic test twice in a row. Bank 1 — Bank 1 is the part of the engine with the first cylinder.

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Email this Page. I've been getting all kinds of codes telling me bank 1 and bank 2 too lean and bad upstream O2 sensors. This is prolly a 1 page thread at most. The main catagories are electrical system, fuel system, EGR system, induction system, and base engine. So you see it's not that easy. View iTrader Profile. Otherwise you would most likley have and DTC's accompanying. Code P is upstream bank 1 oxygen sensor too lean. P only!!! The following errors occurred with your submission. I think that is passenger side, before the catalytic converter. Newbie issue

Home » OBD Codes. Seeing the P code can cause your heart to sink, but it might not be as worrisome as you think.

You need some instruction on this as follows; The code is indicating an over rich appearing condition at the end of a PCM test that fails switching. So it's the sensor lol after all this looking for this and that it's the sensor lol!!!! Thanks all. Given that it idles and seems to run smoothly, would you say the O2 sensor is the likely culprit? The time now is AM. P only!!! With K miles, a check of the integrity of the exhaust system would be in order. Received 9 Likes on 8 Posts. It could be a vacuum leak, a bad dip stick seal, a leaking exhaust gasket, cracked exhaust manifold, etc. If that is not it then vacuum and injector testing. Am I right so far? Since this is an obvious indication of a lean burning cylinder can I make the assumption my most likely problem is dirty fuel injectors on those cylinders?