1998 Ford Escort 1998 Escort Zx2 Trouble code 172

Tiny
GFREEBER
  • MEMBER
  • 1998 FORD ESCORT
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 117,000 MILES
I have a 1998 escort Zx2 I keep getting a code 172 on it. I have replaced o2 sensors and injectors. The code states bad o2 sensor. Any ideas
Thursday, October 15th, 2009 AT 12:43 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
P0172 Running rich

Could be a bad O2 sensor, excessive fuel pressure (bad fuel pressure regulator or plugged return line), leaky fuel injectors, dirty air filter or restricted air inlet, or a defective coolant temperature sensor that prevents the engine management system from going into closed loop mode
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
+1
Thursday, October 15th, 2009 AT 4:11 PM

Please login or register to post a reply.

Related Oxygen Sensor Replace/Remove Content

Oxygen Sensor Replacement
VIDEO
Oxygen Sensor Replacement
Instructional repair video
Oxygen Sensor Replacement
GUIDE
Oxygen Sensor Replacement
An oxygen or lambda sensor is used to determine the engine exhaust mixture which can then be controlled by the computer. These sensors are equipped with a heater that can...
VIEW MORE

Sponsored links