2004 Ford Mondeo DIAGNOSTIC CODE

Tiny
JONTHAN JOSE
  • MEMBER
  • 2004 FORD MONDEO
Engine Mechanical problem
2004 Ford Mondeo 6 cyl All Wheel Drive Manual 45.000 miles

I HAVE A DIAGNOSTIC TOOL, AND A CODE 1150 AND 1151? MY ENGINE LIGHT COMES ON YELLOW. NO ONE CAN TELL WHAT THE PROBLEM IS WITH MY FORD MONDEOST220? HELP!
Do you
have the same problem?
Yes
No
Monday, March 30th, 2009 AT 4:32 AM

1 Reply

Tiny
RASMATAZ
  • MEMBER
Heated oxygen sensor/s

P1150/1151 OBD Trouble Code

Technical DescriptionLack of HO2S-21 Switch, Sensor Indicates Lean

What does that mean?A Heated Exhaust Oxygen (HO2S) sensor indicating lean at the end of a test is trying to correct for an over-rich condition. The test fails when the fuel control system no longer detects switching for a calibrated amount of time.

SymptomsYou will likely not notice any drivability problems.

CausesA code P1151 may mean that one or more of the following has happened:

Electrical:
Short to VPWR in the harness or HO2S
Water in the 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)
Was this
answer
helpful?
Yes
No
Monday, March 30th, 2009 AT 5:08 AM

Please login or register to post a reply.

Recommended Guides