Login  |  Register
Nissanhelp.com - All About Nissan
Do-It-Yourself Maintenance Owners Manuals Recalls/Campaigns Service Bulletins Service Manuals Nissan OBDII Codes Glossary & Acronyms More...
Member's Ride Photos Stock Photo Gallery
Classifieds - For Sale Classifieds - Wanted To Buy Classifieds - Mechanic Wanted Classifieds - Auto Services Search Auto Parts
Register FAQ Social Groups Mark Forums Read
Nissan Expert advice please Forums > > Nissan Expert advice please Nissan Expert advice please
Forgot Password? Join Us!

Classifieds - Mechanic Wanted Need a mechanic in you area?

Thread Tools Display Modes
Old 10-20-2020, 07:35 AM
MrsKitty007 MrsKitty007 is offline
Registered User
2018 Frontier
Join Date: Oct 2020
Posts: 1
Exclamation Nissan Expert advice please

Good day, I have a 2018 Nissan Frontier 2.5l NP300, 60 000km on the clock. it keeps going into limp mode when I reach 3000rpm. the only error I get is P012B. can this cause the limp mode and how can I fix it?

We tried replacing the Solenoid Control Valve on the pump
Replaced the Pressure Release Valve

Any and all advice will be appreciated!
Reply With Quote
Old 10-27-2020, 06:18 PM
smj999smj's Avatar
smj999smj smj999smj is offline
Master Enthusiast
2006 Pathfinder
2003 Frontier King Cab
2003 Frontier KC SVE 4x4
Join Date: Jun 2012
Location: Prospect, VA
Posts: 1,866

Unfortunately, we don't have the 2.5 diesel engine in the US. The P012B code can be triggered by the following:

-Faulty Turbocharger/Supercharger Inlet Pressure Sensor
-Turbocharger/Supercharger Inlet Pressure Sensor harness is open or shorted
-Turbocharger/Supercharger Inlet Pressure Sensor circuit poor electrical connection

Read more: P012B Turbocharger/Supercharger Inlet Pressure Sensor Circuit Range/Performance Downstream Of Throttle Valve

I would believe that it could cause you to go into limp mode. I did find that there are several YouTube videos that have diagnostic information pertaining to this code for this application, so that would be a good place to start. You should check the harness connections in the circuit to make sure the pins are clean, straight and not pushed out of the connector. Ideally, a factory service manual should be accessed where you can find the step-by-step diagnostics for that particular code along with the wiring diagrams, but I don't know of any places to access FSM's for vehicles outside of the US.
Reply With Quote

advice, expert, nissan

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

All times are GMT -8. The time now is 06:10 PM.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2023, vBulletin Solutions Inc.
Search Engine Optimisation provided by DragonByte SEO v2.0.42 (Pro) - vBulletin Mods & Addons Copyright © 2023 DragonByte Technologies Ltd.