oil pressure sensors - Honda-Tech - Honda Forum Discussion

Tech / Misc Tech topics that don't seem to go elsewhere.

oil pressure sensors

Thread Tools Search this Thread
Old 05-19-2011, 09:45 AM   #1
Honda-Tech Member
Thread Starter
Join Date: May 2011
Posts: 5
Default oil pressure sensors

We have a 4 cyl. VTECH 2000 model Accord with an oil light on and a p1259 code. As I understand this code is set w/ low oil pressure below 4000to 6000 rpm. I assumed that these things were related. The owner has been driving this with the oil light on for some time. When I checked the oil pressure switch I found two directly over the oil filter. One on the driver and one on the passenger side. What do each one of these sensors provide?
t4wrench is offline   Reply With Quote
Old 06-02-2011, 06:13 PM   #2
Honda-Tech Member
Thread Starter
Join Date: May 2011
Posts: 5
Default Re: oil pressure sensors

This repair turned into a quick fix. Due to the fact that I am wheelchair bound, I never was able to see the underside of this engine. I had a friend install an oil pressure gauge into the oil pressure sender port over the filter. By the way the other sensor next to it was a knock sensor. The engine only produced 6 to 10 psi. (just enough to prevent the bottom end from coming apart). The oil pan was caved in right below the pick up tube almost completely starving the oil pump. We pulled the pan, replaced the pick up tube and the pan and retested. It now develops 60psi @ idle. The code did not reoccur. This engine has 410,000+ miles on it and runs beautifully. On a more technical note, the VTEC oil pressure sensor next to the control valve on the head requires a minimum oil pressure to break the ground allowing VTEC oil flow into the valve train. Does any one know what is the min. pressure required to trip the VTEC oil pressure sensor? I do know that low pressure @ this sensor will set a code P1259. All is well that ends well!!
t4wrench is offline   Reply With Quote
Old 06-02-2011, 07:17 PM   #3
Honda-Tech Member
SPOOLINmatt's Avatar
Join Date: Mar 2004
Location: North Georgia/Atlanta
Posts: 7,908
Default Re: oil pressure sensors

im pretty sure one of those is a knock sensor, and one is oil pressure. Both are one wire. the knock is usually the sensor mounted highest on the block so it can listen in the combustion chambers.
SPOOLINmatt is offline   Reply With Quote
Old 06-02-2011, 08:21 PM   #4
Honda-Tech Member
slowcivic2k's Avatar
Join Date: Jul 2006
Location: Kansas
Posts: 2,812
Default Re: oil pressure sensors

Knock sensor is positioned between cylinders 2 and 3, the oil switch is parallel to the oil passages on the block, should be very easy to spot.

VTEC oil pressure switch?
slowcivic2k is offline   Reply With Quote
Old 06-03-2011, 01:32 AM   #5
Technical Hero
HondaPartsHero's Avatar
Join Date: May 2002
Location: Charlotte, NC, 28227
Posts: 9,856
Default Re: oil pressure sensors


scroll down to the OBD2 section for oil pressure testing procedures for VTEC
HondaPartsHero is offline   Reply With Quote

Related Topics
Thread Thread Starter Forum Replies Last Post
2010 Accord Oil & Engine Light on Onebadmofo Honda Accord & Crosstour (2003 - 2012) 1 01-25-2017 03:04 AM
oil light ? team 15 Honda Civic / Del Sol (1992 - 2000) 11 05-24-2010 12:53 PM
disabling oil pressure light ? vti444 Honda Civic / Del Sol (1992 - 2000) 2 11-24-2008 11:57 AM
ATTS question? jmar97 Honda Prelude 9 12-03-2004 10:34 AM
vtec help b18c-93 Tech / Misc 3 01-08-2002 12:37 PM

civic, element, fix, gauge, honda, knock, light, oil, plug, pressure, sensor, sensors, switch, tech, turn

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

All times are GMT -8. The time now is 04:05 PM.

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
  • Ask a Question
    Get answers from community experts
Question Title:
Your question will be posted in: