got a code after replacing knock sensor. and a cel
Thread Starter
Senior Member
Joined: May 2002
Posts: 144
got a code after replacing knock sensor. and a cel
i am reall confused now. I never had a cel before and after getting a 0304 i replaced the knock sensor and then checking the code after that, I get the 0305 code which is the EGR temp sensor and 1004 which doesnt even exist. Why would i get a code i never had after i replace my knock sensor? Can some please please help me out here. I"m scared to drive my car now. What exactly does the egr temp sensor do anyways?
have u reset the ECU? if not, you should....and here's what came up for 0305
Diagnostic Trouble Code 0305 points to a problem with the Exhaust Gas Recirculation Temperature Sensor. This sensor is a thermistor (a resistor with a value which varies inversely with temperature). The EGRTS is used by the Engine Control Module to test the EGR system operation. Since the signal from the EGRTS is not used for engine operation your car should run perfectly well despite having the Check Engine Light on.
Possible causes of DTC 0305 include ...
- harness or connectors (The EGRTS circuit is open or shorted)
- bad EGRTS
- malfunction elsewhere in the EGR system
The EGRTS may be tested with an ohmmeter.
- at "D" degrees F the resistance should "R" (in Megohms) should be ...
D = 32, R = 0.68-1.11
D = 122, R = 0.09-0.12
D = 212, R = 0.017-0.024
Diagnostic Trouble Code 0305 points to a problem with the Exhaust Gas Recirculation Temperature Sensor. This sensor is a thermistor (a resistor with a value which varies inversely with temperature). The EGRTS is used by the Engine Control Module to test the EGR system operation. Since the signal from the EGRTS is not used for engine operation your car should run perfectly well despite having the Check Engine Light on.
Possible causes of DTC 0305 include ...
- harness or connectors (The EGRTS circuit is open or shorted)
- bad EGRTS
- malfunction elsewhere in the EGR system
The EGRTS may be tested with an ohmmeter.
- at "D" degrees F the resistance should "R" (in Megohms) should be ...
D = 32, R = 0.68-1.11
D = 122, R = 0.09-0.12
D = 212, R = 0.017-0.024
Thread Starter
Senior Member
Joined: May 2002
Posts: 144
so i should just leave it alone?
Originally posted by Jamsan
have u reset the ECU? if not, you should....and here's what came up for 0305
Diagnostic Trouble Code 0305 points to a problem with the Exhaust Gas Recirculation Temperature Sensor. This sensor is a thermistor (a resistor with a value which varies inversely with temperature). The EGRTS is used by the Engine Control Module to test the EGR system operation. Since the signal from the EGRTS is not used for engine operation your car should run perfectly well despite having the Check Engine Light on.
Possible causes of DTC 0305 include ...
- harness or connectors (The EGRTS circuit is open or shorted)
- bad EGRTS
- malfunction elsewhere in the EGR system
The EGRTS may be tested with an ohmmeter.
- at "D" degrees F the resistance should "R" (in Megohms) should be ...
D = 32, R = 0.68-1.11
D = 122, R = 0.09-0.12
D = 212, R = 0.017-0.024
have u reset the ECU? if not, you should....and here's what came up for 0305
Diagnostic Trouble Code 0305 points to a problem with the Exhaust Gas Recirculation Temperature Sensor. This sensor is a thermistor (a resistor with a value which varies inversely with temperature). The EGRTS is used by the Engine Control Module to test the EGR system operation. Since the signal from the EGRTS is not used for engine operation your car should run perfectly well despite having the Check Engine Light on.
Possible causes of DTC 0305 include ...
- harness or connectors (The EGRTS circuit is open or shorted)
- bad EGRTS
- malfunction elsewhere in the EGR system
The EGRTS may be tested with an ohmmeter.
- at "D" degrees F the resistance should "R" (in Megohms) should be ...
D = 32, R = 0.68-1.11
D = 122, R = 0.09-0.12
D = 212, R = 0.017-0.024
dont you think its weird that the code comes up after i replace the knock sensor? I have a stillen y-pipe and b-pipe and exhaust on my 98 maxima se. by the way, thanks for the write up. I appreciate it.
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Bad O2 sensors will throw a knock sensor code. I would look into replacing your front O2 sensors on the front and rear bank of the y-pipe. Go to Autozone, PepBoys, www.foreignpartsplace.com , etc....
Thread Starter
Senior Member
Joined: May 2002
Posts: 144
i dont have knock sensor code
Originally posted by Ramius83
Bad O2 sensors will throw a knock sensor code. I would look into replacing your front O2 sensors on the front and rear bank of the y-pipe. Go to Autozone, PepBoys, www.foreignpartsplace.com , etc....
Bad O2 sensors will throw a knock sensor code. I would look into replacing your front O2 sensors on the front and rear bank of the y-pipe. Go to Autozone, PepBoys, www.foreignpartsplace.com , etc....
Senior Member
Joined: Mar 2001
Posts: 1,111
Re: i dont have knock sensor code
Originally posted by Zero Gravity
i just replaced my knock sensor code allready and then the new code of the egr and some unknown code of 1004 came up. Whats up with that. I just took away the cel so I should be fine now. Car runs fast after replacing the knock sensor.
i just replaced my knock sensor code allready and then the new code of the egr and some unknown code of 1004 came up. Whats up with that. I just took away the cel so I should be fine now. Car runs fast after replacing the knock sensor.
thanks for any help
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