Code 51 & 52

Toyota87Supra · 05-28-2007, 08:37 PM

I'm getting code 51 & 52 and my car wont turn over. It has all power and it turned over and ran yesterday. please help.

dcrusupra · 05-28-2007, 11:06 PM

Code 51?

Check your codes again

Code 52 is your knock sensors.

After you test your knock sensors to see if they are bad and replace which ever one is necessary or both, read up on this...

Knock Sensor Rewire

cre · 05-30-2007, 03:29 AM

Code 51: Switch Signal

Diagnosis

No "IDL" signal, "NSW" signal or "A/C" signal to ECU, during diagnosis check.

Trouble Area

A/C switch circuit
A/C switch
A/C amplifier
Throttle position sensor circuit
Throttle position sensor
ECU

http://www.cygnusx1.net/Supra/TechTi...ror_codes.aspx

05-28-2007, 08:37 PM	#1
Toyota87Supra Intake Join Date: May 2006 Location: New Hampshire Posts: 34	Code 51 & 52 I'm getting code 51 & 52 and my car wont turn over. It has all power and it turned over and ran yesterday. please help. __________________ 87 5speed Targa 7MGTE... 07 Civic Si Stock... 01 Silverado 1500...

05-28-2007, 11:06 PM	#2
dcrusupra 500whp yet? Join Date: Aug 2005 Location: Plantation, Fl. Posts: 1,052	Code 51? Check your codes again Code 52 is your knock sensors. After you test your knock sensors to see if they are bad and replace which ever one is necessary or both, read up on this... Knock Sensor Rewire __________________ New Rebuild My CarDomain

05-30-2007, 03:29 AM	#3
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	Code 51: Switch Signal Diagnosis No "IDL" signal, "NSW" signal or "A/C" signal to ECU, during diagnosis check. Trouble Area A/C switch circuit A/C switch A/C amplifier Throttle position sensor circuit Throttle position sensor ECU http://www.cygnusx1.net/Supra/TechTi...ror_codes.aspx

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