Ford Explorer P2198 code

5

Asked by May 14, 2016 at 12:28 PM about the 2003 Ford Explorer Eddie Bauer V6 4WD

Question type: Maintenance & Repair

Explorer is getting a P0174 and P2198 code

1 Answer

12,045

Sure, just a guess at this point but HEGO is Suspect!~~ Here's the complete follow through. Generally, you should begin troubleshooting with the lowest numbered code. There are quite a few items common to all the codes. Below, I have defined the code and what sets it. Then there is a list of causes. Unless you want to start shotgunning parts, I would use this list to check everything that can be checked. I would concentrate on fuel and induction systems. That being said, however, it is quite possible the O2 sensor for bank 1 is bad. P0171 - System too Lean (Bank 1) The Adaptive Fuel Strategy continuously monitors the fuel delivery hardware. The test fails when the adaptive fuel tables reach a rich calibrated limit. Refer to Section 1 , Powertrain Control Software, Fuel Trim for more information. Some of the causes for this are: Air Measurement System: MAF sensor (contaminated, damaged, malfunctioning, etc.) Fuel System: Fuel pressure regulator (leaking, malfunctioning, etc.). Fuel filter plugged, dirty. Fuel pump (weak, check valve leaking, etc.). Leaking/contaminated fuel injectors. Low fuel pressure or running out of fuel. EVAP canister purge valve leaking (when canister is "clean"). Fuel supply line restricted. Fuel rail pressure sensor (incorrect reading). Air Induction System: Air leaks after the MAF. Vacuum Leaks. PCV system (leak, valve stuck open, etc.) Improperly seated engine oil dipstick. P2198 - Lack of HO2S-21 Switch, Sensor Indicates Lean A HEGO sensor indicating rich at the end of a test is trying to correct for an over-lean condition. The test fails when the fuel control system no longer detects switching for a calibrated amount of time. P2198 have common causes: Electrical: Short to VPWR in harness or HO2S Water in harness connector Open/Shorted HO2S circuit Corrosion or poor mating terminals and wiring Damaged HO2S Damaged PCM Fuel System: Excessive fuel pressure Leaking/contaminated fuel injectors Leaking fuel pressure regulator Low fuel pressure or running out of fuel Vapor recovery system Induction System: Air leaks after the MAF Vacuum Leaks PCV system Improperly seated engine oil dipstick EGR System: Leaking gasket Stuck EGR valve Leaking diaphragm or EVR Base Engine: Oil overfill Cam timing Cylinder compression Exhaust leaks before or near the HO2S(s) Regards

Your Answer

Add photo

Related Questions

Search Ford Explorer Questions

Ford Explorer Experts

#1 OJ
OJ
Reputation 10,060
#2 Tom Demyan
Tom Demyan
Reputation 4,110
#3 tennisshoes
tennisshoes
Reputation 2,350
View All

Related Models For Sale

Used Jeep Grand Cherokee
1,023 Great Deals out of 74,887 listings starting at $750
Used Ford Expedition
473 Great Deals out of 24,887 listings starting at $700
Used Chevrolet Tahoe
548 Great Deals out of 29,234 listings starting at $1,699
Used Ford F-150
2,191 Great Deals out of 206,316 listings starting at $1,499
Used Dodge Durango
274 Great Deals out of 22,704 listings starting at $1,200
Used Toyota Highlander
346 Great Deals out of 24,768 listings starting at $2,499
Used Ford Escape
1,391 Great Deals out of 93,563 listings starting at $1,250
Used Toyota 4Runner
249 Great Deals out of 20,494 listings starting at $1,800
Used Honda Pilot
381 Great Deals out of 21,194 listings starting at $1,500
Used Nissan Pathfinder
264 Great Deals out of 22,735 listings starting at $1,995
Used GMC Yukon
374 Great Deals out of 18,226 listings starting at $2,950
Used Ford Explorer Sport
223 listings starting at $4,495

Used Cars For Sale

2017 Ford Explorer For Sale
39 Great Deals out of 44,525 listings starting at $22,710
2016 Ford Explorer For Sale
181 Great Deals out of 5,335 listings starting at $16,900
2015 Ford Explorer For Sale
176 Great Deals out of 4,653 listings starting at $13,890
2014 Ford Explorer For Sale
217 Great Deals out of 6,173 listings starting at $9,990
2013 Ford Explorer For Sale
113 Great Deals out of 2,987 listings starting at $7,300

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.