The 2013 Ford F150 outfitted with a 3.5L EcoBoost engine was working completely. Except for a drop in gasoline economic system, there was no indication of an issue till the Examine Engine mild within the sprint illuminated. A system scan revealed P2098 code saved in reminiscence, which represents Submit Catalyst Gas Trim System Too Lean Financial institution 2. The situation of Financial institution 2 is the other facet of primary cylinder, which on this case can be the driving force’s facet financial institution of cylinders. The PCM screens the correction worth from the downstream heated oxygen sensor as part of the fore-aft oxygen sensor management routine. The P2098 code units when the correction worth is bigger than a calibrated restrict. When this situation happens, doable causes embrace:
1) Oxygen sensor terminal corrosion
2) Poor connections
3) Exhaust leaks permitting unmetered upstream air to enter leading to a false oxygen sensor studying
4) Contaminated oxygen sensor Financial institution 2 Sensor 1
5) Vacuum leaks
6) Low gasoline stress
7) Gas injectors
Later within the article we’ll add an extra step to the above checks, which was the answer. It’s human nature to go for the short repair first, particularly when the signs match a sample of failures. The up-stream oxygen sensor is normally the primary element that will get changed and it usually resolves the signs. On this case, contemplating the car had 105K city pushed miles on the oxygen sensors, each the upstream and downstream sensors have been changed on that financial institution. Sadly, this didn’t eradicate the symptom, because the Examine Engine mild returned following a number of drive-cycles.
Exhaust Leaks
Whereas there have been no audible sounds on account of an exhaust leak, additional testing was carried out to rule out the introduction of outdoor/unmetered air getting into the system, ensuing within the lean symptom. A minute air leak can play havoc with the system and set lean gasoline trim codes.
Additional testing concerned pressurizing the exhaust system with air stress and checking for leaks by spraying the connections with a soapy answer. Pressurizing the exhaust system will be carried out with compressed air within the 8-10 psi vary most on the tail pipe. An alternative choice is attaching the exhaust port of a store vacuum to the tail pipe with duct tape. This implies will present adequate stress for the soapy answer take a look at. On this case no leaks have been current.
Vacuum Leaks
For these with good listening to, vacuum leaks might not be a problem. In case your ears ring consistently on account of harm from noises emitted from a supercharged direct drive drag boat whereas straddling a spur reduce gear field emitting a excessive pitched whine, you’ll by no means hear a vacuum leak. My private vacuum leak tester is comprised of a small propane bottle with a rubber hose hooked up. Any vacuum leak will probably be evidenced by a rise in engine RPM because the propane is launched. Don’t let the propane are available contact with any electrical arc, or else chances are you’ll odor humorous for the weekend.
Delicate Sensors
The three.5L EcoBoost was fitted with a pace density technique of gasoline management. The system is comprised of three sensors:
1) Turbocharger Consumption Stress and Temperature (TCIPT) Sensor
2) Turbocharger Increase Stress (TCBP)/ Cost Air Cooler Temperature (CACT) Sensor
3) Manifold Absolute Stress (MAP)/Consumption Air Temperature 2 (IAT2) Sensor
The Treatment for the Lean Gas Trim Code P2098
Whereas no sensor codes have been saved in reminiscence, every of the three beforehand talked about sensors have been eliminated for inspection functions. That inspection revealed that the Turbocharger Increase Stress (TCBP)/Cost Air Cooler Temperature (CACT) Sensor and the Manifold Absolute Stress (MAP)/Consumption Air Temperature 2 (IAT2) Sensor have been each contaminated with a light-weight movie of oil.
A clean-up of the 2 talked about sensors with a Mass Air Circulation sensor cleaner was all it took to revive the gasoline economic system and eradicate the P2098 Financial institution 2 Lean Gas Trim code. The final word answer was deceptive, as we assumed a sensor failurenor contamination would have set a code plus a lean trim code on each banks of cylinders, however that was not the case.
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