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2003 Honda CR-V EX 4WD Manual

2003 Honda CR-V
Trim Info:
4-Wheel Drive, 4 Door, 4WD Sport Utility
21 mpg city / 25 mpg hwy
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September 4, 2011, 5:25 am

Pat E

Question: DTC Code 2646

Which states "VTEC Oil Pressure Switch circuit low voltage"
Proable causes:
Check engine oil and pressure
Open or short circuit condition
Failed VTEC Pressure Switch

Just had the oil changed within the last few days - and the oil filter. So I'm assuming the oil pressure is fine but
1. How do you check the oil "pressure"?
2. Where would you look for "open" or "short" circuits?
3. Where is the VTEC Pressure Switch located and could I change this myself?
I'm also getting another code of P1107 along with this one.
Symptoms the car is having is "check engine light, VSA light and ! in triangle light all come on when driving 35 mph or more, if driven with all lights on, the car will start "bucking" but then after shutting engine off, then ONLY the check enigine light comes back on and then after driving it for so many miles, the check engine light will go off.
Thanks in advance for answers to my 2 questions

September 6, 2011, 8:51 pm

Richard W
Expert Mechanic

For the info you need go to Auto Zone's web site they have a free online manual. It will show you how to test the code you have.

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