I Pissed off my Max (kicking codes)
04-20-2012, 08:22 AM
#1
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Join Date: Oct 2011
Posts: 93
I Pissed off my Max (kicking codes)
So I decided to be nice to my car and try running premium in her to get better performance and better gas mileage. However I think this may have really pissed her off.
I am now kicking up these two codes; P0420 - Catalyst System Efficiency Below Threshold (Bank 1) and P1706 - Park / Neutral Position Switch.
Would the change in gas cause the first code and can it cause damage to anything?
What does the second code mean?
I am now kicking up these two codes; P0420 - Catalyst System Efficiency Below Threshold (Bank 1) and P1706 - Park / Neutral Position Switch.
Would the change in gas cause the first code and can it cause damage to anything?
What does the second code mean?
04-20-2012, 08:57 AM
#2
Senior Member
Join Date: Apr 2004
Location: Atlanta
Posts: 1,861
1st code probably just triggered what was already there, but hiding... http://www.obd-codes.com/p0420
2nd code unrelated - http://forums.maxima.org/5th-generat...ode-p1706.html
2nd code unrelated - http://forums.maxima.org/5th-generat...ode-p1706.html
04-20-2012, 09:27 AM
#3
The P0420 indicates that the pre-cat is not working at peak efficiency. In your case it is the bank 1 pre-cat that is the firewall side of the engine. There is more than one thing that can cause this. Seems strange that it happened when you changed gasoline grades. Spark plugs is listed as one of the possible causes.
P1706 code - the park/neutral switch sends a signal to the ECU when the transmission is in either of those 2 positions. When the ECU gets signals from other sensors that the car is moving and the park/neutral switch still says park or neutral, you get P1706. But the ECU likes to throw extra codes that are not really happening. I'm wondering if this is one of those times.
P1706 code - the park/neutral switch sends a signal to the ECU when the transmission is in either of those 2 positions. When the ECU gets signals from other sensors that the car is moving and the park/neutral switch still says park or neutral, you get P1706. But the ECU likes to throw extra codes that are not really happening. I'm wondering if this is one of those times.
04-20-2012, 10:44 AM
#4
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Join Date: Oct 2011
Posts: 93
The P0420 indicates that the pre-cat is not working at peak efficiency. In your case it is the bank 1 pre-cat that is the firewall side of the engine. There is more than one thing that can cause this. Seems strange that it happened when you changed gasoline grades. Spark plugs is listed as one of the possible causes.
04-20-2012, 03:53 PM
#5
The fuel (gasoline) is supposed to burn in the cylinder when the spark ignites it. The octane rating says you will get more power with a higher octane. The P0420 says that the reading from sensor 2 is almost the same as sensor 1. That's why I wonder about your spark plugs. The problem could still be an O2 sensor but check the spark plugs.
04-20-2012, 04:09 PM
#6
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Join Date: Oct 2011
Posts: 93
The fuel (gasoline) is supposed to burn in the cylinder when the spark ignites it. The octane rating says you will get more power with a higher octane. The P0420 says that the reading from sensor 2 is almost the same as sensor 1. That's why I wonder about your spark plugs. The problem could still be an O2 sensor but check the spark plugs.
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