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Author Topic: Ranger 1996 (Mazda B2300) Emission Codes P0401 and P1443  (Read 860 times)

Offline larry_too

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Ranger 1996 (Mazda B2300) Emission Codes P0401 and P1443
« on: December 20, 2012, 01:46:38 PM »
I have a Ranger 4 cyl under the skin of a Mazda B2300, made in NJ so trouble codes should be the same.

Two trouble codes P0401, EGR flow low
                              P1443,  Evap solenoid

I have replaced the EGR control solenoid (sticky) but the P0401 returns
I drew a vac on the EGR valve and it held, also no obstruction in the valve or metering pipe, and the valve cycled.
I have replaced the Evap Solenoid (also sticky) but the P1443 returns
I also replaced the vac hoses between the intake and the evap solenoid, evap sensor, and cannister.   Also fixed leak at top of tank. 

How do I go about testing these systems to isolate the causes?

I have a Scan II guage which says that it can read "PID's"  What are those?   The manual says that I need the "TXP, RXF, RXD, and MTH" to read these "PID's"  Where do I find these things.   From what I have, I need the info for the DPFD PID, EVAPPF PID, and RPM PID.

Larry ouch

Offline bp042665

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Re: Ranger 1996 (Mazda B2300) Emission Codes P0401 and P1443
« Reply #1 on: December 20, 2012, 04:26:33 PM »
the 401 code is from the feed back pressure from theDPFE sensor it has 2 hoses coming from it i have found that most of the time a hose is bad  it is located on the back side of the motor on the passanger side it should have 2 hoses and a elctrical connector
« Last Edit: December 20, 2012, 04:29:17 PM by bp042665 »


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