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Code 52

Tiny
KAIKIING
  • MEMBER
  • 1994 TOYOTA COROLLA
  • 186,523 MILES
Hi,

My car listed above (AE110) with 16 valve EFI engine found error 52 after diagnostic jumper test. May I know what might be the problem is and how serious will be the problem cause? Can lead me some steps for checking?

Thanks.
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Friday, September 30th, 2011 AT 1:56 PM

19 Replies

Tiny
KHLOW2008
  • MECHANIC
  • 41,815 POSTS
DTC 52 - KNOCK SENSOR SIGNAL (1.8L)

DTC 52 is set when ECM detects an open or short in the knock sensor circuit with engine speed between 1200-6000 RPM. Check for open or short in knock sensor circuit, a loose or faulty knock sensor of faulty ECM.
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Friday, September 30th, 2011 AT 2:05 PM
Tiny
MHPAUTOS
  • MECHANIC
  • 31,938 POSTS
This code is for a knock sensor, before doing anything I would clear the code and test drive then re scan with an OBD11 scanner report back if there is a new code set.
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Friday, September 30th, 2011 AT 2:06 PM
Tiny
KAIKIING
  • MEMBER
  • 44 POSTS
Hi,
If not wrong my car cannot use any scan tools for scanning. I only found a diagnostic socket in front engine part. Can it be scan using scan tools?

Thanks.
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Friday, September 30th, 2011 AT 2:23 PM
Tiny
KAIKIING
  • MEMBER
  • 44 POSTS
Another thing. I accidentally start the engine when still jumper at the diagnostic port. Will that make any effect to my car ECM?

Thanks
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Friday, September 30th, 2011 AT 2:25 PM
Tiny
MHPAUTOS
  • MECHANIC
  • 31,938 POSTS
No it will not.
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Friday, September 30th, 2011 AT 2:28 PM
Tiny
KAIKIING
  • MEMBER
  • 44 POSTS
Can anyone show me how will exactly the knock sensor look like for my ae110? Many many thanks.
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Friday, September 30th, 2011 AT 2:42 PM
Tiny
KAIKIING
  • MEMBER
  • 44 POSTS
Mphautos, may I know your answer of no it will not is answer for my which question? Sorry for asking that.
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Friday, September 30th, 2011 AT 2:45 PM
Tiny
KHLOW2008
  • MECHANIC
  • 41,815 POSTS
Refer to third diagram for sensor.
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Friday, September 30th, 2011 AT 2:56 PM
Tiny
MHPAUTOS
  • MECHANIC
  • 31,938 POSTS
Leaving the check connector in will not do any harm. Do not leave it in there all the time, but for testing it is not a problem.
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Saturday, October 1st, 2011 AT 12:08 AM
Tiny
KAIKIING
  • MEMBER
  • 44 POSTS
Thanks a lot mhpautos.
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Saturday, October 1st, 2011 AT 1:39 AM
Tiny
KAIKIING
  • MEMBER
  • 44 POSTS
Can someone show me the location of the sensor to me? Cause I cannot find the sensor. Thanks
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Sunday, October 2nd, 2011 AT 12:03 AM
Tiny
KHLOW2008
  • MECHANIC
  • 41,815 POSTS
Refer to diagram.
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Sunday, October 2nd, 2011 AT 9:13 AM
Tiny
KAIKIING
  • MEMBER
  • 44 POSTS
May I know the error code can reset for this car or not? If can please let me know how to reset it so that I can test with new sensor. Thanks
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Sunday, October 2nd, 2011 AT 12:54 PM
Tiny
KHLOW2008
  • MECHANIC
  • 41,815 POSTS
Disconnecting the battery would reset the error code.
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Sunday, October 2nd, 2011 AT 1:57 PM
Tiny
KAIKIING
  • MEMBER
  • 44 POSTS
No other way to do that besides this? No jumper an do reset? Thanks a lot. I will try it soon.
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Sunday, October 2nd, 2011 AT 2:26 PM
Tiny
KHLOW2008
  • MECHANIC
  • 41,815 POSTS
Either pulling the EFI fuse or disconnecting the battery is the only way.
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Sunday, October 2nd, 2011 AT 2:36 PM
Tiny
KAIKIING
  • MEMBER
  • 44 POSTS
I try pulling the EFI fuse, but I found the fault code still exist although I have not tried the car yet. Does that make sense?
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Sunday, October 2nd, 2011 AT 2:49 PM
Tiny
KAIKIING
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  • 44 POSTS
Hopefully my ECM function normally or else that really going to cause me trouble.
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Sunday, October 2nd, 2011 AT 2:53 PM
Tiny
19JAYBE74
  • MEMBER
  • 1 POST
I created account just to upload this image. This was the money shot.
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Sunday, July 1st, 2018 AT 5:36 PM

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