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P0197 EOT sensor/circuit

Tiny
EDDY1991
  • MEMBER
  • 2010 NISSAN MAXIMA
  • 3.5L
  • V6
  • FWD
  • AUTOMATIC
  • 90,000 MILES
Hi
in my max 2010 check engine appear
code is P0197 engine oil temperature sensor circuit

I found the sensor on lower right near oil filter.

I cleaned the harness but nothing now

please need help ASAP
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Monday, January 4th, 2016 AT 3:31 AM

18 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Did you replace the sensor? The issue is usually the sensor itself

Roy
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Monday, January 4th, 2016 AT 7:26 AM
Tiny
EDDY1991
  • MEMBER
  • 44 POSTS
I replaced the sensor
the EOT sensor I got from the dealer is the one installed on the upper thermostat
that is also coolant sensor?
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Monday, January 4th, 2016 AT 11:14 AM
Tiny
EDDY1991
  • MEMBER
  • 44 POSTS
Still check engine on with same code.
Image (Click to make bigger)
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Monday, January 4th, 2016 AT 11:17 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
No the eot sensor is at the bottom by the filter.

The one at the thermostat is the ect or engine coolant sensor.

Roy
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Monday, January 4th, 2016 AT 12:01 PM
Tiny
EDDY1991
  • MEMBER
  • 44 POSTS
Everyone here told me that is a pressure switch. Same which is near the crank pulley.
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Monday, January 4th, 2016 AT 12:05 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
It is a sensor which does both jobs

Roy
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Monday, January 4th, 2016 AT 12:11 PM
Tiny
EDDY1991
  • MEMBER
  • 44 POSTS
Thanks sir
I appreciate
i will update u ASAP
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Monday, January 4th, 2016 AT 12:28 PM
Tiny
EDDY1991
  • MEMBER
  • 44 POSTS
Sir
the pressure switch is working
oil level light is fine.

Still that is bad for Engine oil temperature?
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Tuesday, January 5th, 2016 AT 9:08 AM
Tiny
EDDY1991
  • MEMBER
  • 44 POSTS
Sir
I changed the switch but again same problem p0197
2- on neutral idle position the RPM is not still. Car is trying to stall

today I cleaned both catalytic converters and the hesitation on idle is still there
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Monday, January 11th, 2016 AT 12:16 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Try cleaning the throttle body out real good for the idle.

Do you have a real scan tool, not a code reader?

Roy
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Monday, January 11th, 2016 AT 4:26 AM
Tiny
EDDY1991
  • MEMBER
  • 44 POSTS
No I dont have
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Monday, January 11th, 2016 AT 5:47 AM
Tiny
ASEMASTER6371
  • MECHANIC
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Ok, hard to continue without it as info is needed to help find the failure. Inspect the wiring closely for breaks and bad connections.

Roy
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Monday, January 11th, 2016 AT 5:51 AM
Tiny
EDDY1991
  • MEMBER
  • 44 POSTS
Ok I will inspect and let u know
thanks
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Monday, January 11th, 2016 AT 5:53 AM
Tiny
EDDY1991
  • MEMBER
  • 44 POSTS
Sir
i scanned the car from a workshop with a scanner and this time its just a single code p0021 timing control b2

the smoke become low and it is only when I rev high and release.

Water vapors appear on the muffler tip

totally confused?
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Tuesday, January 12th, 2016 AT 1:33 AM
Tiny
ASEMASTER6371
  • MECHANIC
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Water vapors are normal on the tail pipe. The variable timing code is usually caused by sludge in the oil. Suggest flushing out the oil system with a product called sea foam, change the oil, filter and the solenoid for the code.

Roy
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Tuesday, January 12th, 2016 AT 8:16 AM
Tiny
EDDY1991
  • MEMBER
  • 44 POSTS
I changed the solenoid already.
But fed up with miss fire on idle.
No codes detected
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Tuesday, January 12th, 2016 AT 8:18 AM
Tiny
ASEMASTER6371
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If you did not flush the system with the sea foam, you will sludge up the new one and it will fail.
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Tuesday, January 12th, 2016 AT 8:25 AM
Tiny
EDDY1991
  • MEMBER
  • 44 POSTS
Ok I will do
thanks
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Tuesday, January 12th, 2016 AT 8:26 AM

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