2001 Montero Sport P0401 Code Help
#1
2001 Montero Sport P0401 Code Help
I keep getting the P0401 code on my 2001 3.0l Montero Sport. Vehicle starts, idles, & runs great. I checked the EGR + ports all clean, EGR appears to be working. Retrieved following Freeze Frame (I don't know how to interpret)
Fuel Sys 1 OL-Drive
Fuel Sys 2 OL-Drive
Calc Load (%) 13.73
ECT(F) 203
STFT B1(%) 0.00
LTFT B1(%) 3.13
STFT B2(%) 0.00
LTFT B2(%) 5.47
Eng RPM 1503
Veh Speed(mph) 49
Any suggestions on narrowing down the culprit?
Fuel Sys 1 OL-Drive
Fuel Sys 2 OL-Drive
Calc Load (%) 13.73
ECT(F) 203
STFT B1(%) 0.00
LTFT B1(%) 3.13
STFT B2(%) 0.00
LTFT B2(%) 5.47
Eng RPM 1503
Veh Speed(mph) 49
Any suggestions on narrowing down the culprit?
#3
Same Issue
I keep getting the P0401 code on my 2001 3.0l Montero Sport. Vehicle starts, idles, & runs great. I checked the EGR + ports all clean, EGR appears to be working. Retrieved following Freeze Frame (I don't know how to interpret)
Fuel Sys 1 OL-Drive
Fuel Sys 2 OL-Drive
Calc Load (%) 13.73
ECT(F) 203
STFT B1(%) 0.00
LTFT B1(%) 3.13
STFT B2(%) 0.00
LTFT B2(%) 5.47
Eng RPM 1503
Veh Speed(mph) 49
Any suggestions on narrowing down the culprit?
Fuel Sys 1 OL-Drive
Fuel Sys 2 OL-Drive
Calc Load (%) 13.73
ECT(F) 203
STFT B1(%) 0.00
LTFT B1(%) 3.13
STFT B2(%) 0.00
LTFT B2(%) 5.47
Eng RPM 1503
Veh Speed(mph) 49
Any suggestions on narrowing down the culprit?
Last edited by Chaphall; 04-14-2020 at 05:29 PM. Reason: Incomplete
#5
Most likely bad EGR solenoid. You can check to make sure EGR valve is working by running engine at idle, and pulling vacuum with the hand pump on the ERG valve vacuum port. If engine sputters and dies - EGR valve is working properly.
#7
Did you replace EGR solenoid with Mitsubishi OEM, or with an aftermarket? I found that aftermarket ones work at first, but eventually throw the code again. It had something to do with the duty cycle of the solenoid. It is not just a simple ON/OFF state. These solenoid cycles hundreds of times per minute to regulate EGR amount admitted to the engine. Aftermarket senoids somehow fail with that load.
Thread
Thread Starter
Forum
Replies
Last Post
Bnchs
Mitsubishi Montero & Montero Sport
1
07-07-2006 03:29 AM