ecu codes?? 3 long 1 3 short?
08-03-2009 | 03:47 PM
#1
Thread Starter
Registered User
Joined: Aug 2009
Posts: 5
ecu codes?? 3 long 1 3 short?
the code i keep getting has 3 long flashes and then a second goes by another flash then 3 fast flashes is this a code 33 for o2 my engine lighte is not on when car is running i checked it because i think my pcu is crap
08-03-2009 | 10:49 PM
#2
The Good Twin
Joined: Aug 2005
Posts: 20,639
From: Wild Wild West, UTAH!
Welcome to ZDriver!
You really need to work on punctuation so your sentences make sense.
So you're asking what code 33 is? First google result: http://forums.nicoclub.com/zerothread/249406
33 is the left O2 sensor circuit.
You really need to work on punctuation so your sentences make sense.
So you're asking what code 33 is? First google result: http://forums.nicoclub.com/zerothread/24940633 is the left O2 sensor circuit.
08-04-2009 | 12:03 AM
#3
Encyclopedic Knowledge
Joined: Aug 2005
Posts: 3,316
From: Naperville, IL
^2nd on making sense... I tried to decipher that earlier but I couldn't figure out where the question was.
If you got a code 33 and mentioned that it's the O2 sensor, replace the damn sensor... what's the issue? lol
And what is a "pcu"?
If you got a code 33 and mentioned that it's the O2 sensor, replace the damn sensor... what's the issue? lol
And what is a "pcu"?
08-11-2009 | 02:32 PM
#8
F5 Hero
Joined: Aug 2005
Posts: 855
From: Little Rock, Arkansas
08-11-2009 | 03:57 PM
#10
Encyclopedic Knowledge
Joined: Aug 2005
Posts: 3,316
From: Naperville, IL
Yeah... which is why I'm not sure how to answer his question. I've honestly never done the ECU self diagnostic, so my knowledge of how to answer his question (beyond knowing which codes mean which) is exhausted.
08-11-2009 | 05:03 PM
#12
Encyclopedic Knowledge
Joined: Aug 2005
Posts: 3,316
From: Naperville, IL
Here's an idea... try the O2 sensor diagnostic:
If one (or both) of the O2 sensors fails, you know it was a code 33... replace the sensor and move on. If both of them pass, then we can worry about what that extra flash was.
9. Start engine with the ECU in MODE II to enter MODE II - Heated Oxygen Sensor (O2) Monitor . The ECU is now monitoring the left O2 sensor. Warm the engine to normal operating temperature, then run at 2000 rpm for 2 minutes. Check that the LED blinks (or the check engine light) more than 5 times every 10 seconds at 2000 rpm.
10. To change to right sensor turn the ECU potentiometer clockwise with engine still running, wait 2 seconds, turn it back. Check the lights at 2000 rpm again for a similar switching condition.
NOTE: Light indicates signal from sensor to ecu. ON=rich, Off=lean. Blinking light means system is constantly adjusting between lean and rich which is normal. Any other indication would be abnormal and require further investigation. The switched on/off is 'closed loop', while a constant on or off is 'open loop'
11. To exit MODE II - Heated Oxygen Sensor Monitor, turn the potentiometer fully counter clock-wise and stop the engine.
10. To change to right sensor turn the ECU potentiometer clockwise with engine still running, wait 2 seconds, turn it back. Check the lights at 2000 rpm again for a similar switching condition.
NOTE: Light indicates signal from sensor to ecu. ON=rich, Off=lean. Blinking light means system is constantly adjusting between lean and rich which is normal. Any other indication would be abnormal and require further investigation. The switched on/off is 'closed loop', while a constant on or off is 'open loop'
11. To exit MODE II - Heated Oxygen Sensor Monitor, turn the potentiometer fully counter clock-wise and stop the engine.
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