Code 52

Tiny
KAIKIING
  • 1994 TOYOTA COROLLA
  • 186,523 MILES

Hi,

My Toyota Corolla AE110 year 1994 if not wrong 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 step for checking?

Thanks.

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

18 Replies

Tiny
KHLOW2008
  • EXPERT
  • 42,001 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
  • EXPERT
  • 31,028 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

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

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
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  • 31,028 POSTS

No it will not.

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Friday, September 30th, 2011 AT 2:28 PM
Tiny
KAIKIING
  • MEMBER

Can anyone show me how will exactly the knock sensor look like for toyota ae110?Many many thanks

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Friday, September 30th, 2011 AT 2:42 PM
Tiny
KAIKIING
  • MEMBER

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
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Refer to 3 rd diagram for sensor.

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Friday, September 30th, 2011 AT 2:56 PM
Tiny
MHPAUTOS
  • EXPERT
  • 31,028 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

Thanks a lot mhpautos.

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Saturday, October 1st, 2011 AT 1:39 AM
Tiny
KAIKIING
  • MEMBER

Can someone show me the location of the sensor to me?Cause I cant find the sensor. Thanks

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Sunday, October 2nd, 2011 AT 12:03 AM
Tiny
KHLOW2008
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Refer to diagram.

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Sunday, October 2nd, 2011 AT 9:13 AM
Tiny
KAIKIING
  • MEMBER

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
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Disconnecting the battery would reset the error code.

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Sunday, October 2nd, 2011 AT 1:57 PM
Tiny
KAIKIING
  • MEMBER

No other way to do that besides this?No jumper an do reset?Thanks a lot.I'll try it soon.

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Sunday, October 2nd, 2011 AT 2:26 PM
Tiny
KHLOW2008
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  • 42,001 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

I try pulling the EFI fuse but I found the fault code still exist although I havent try 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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Hopefully my ECM function normally. Else that really gonna be trouble.

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Sunday, October 2nd, 2011 AT 2:53 PM

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