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Old 05-20-2008, 08:42 AM   #1
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Check engine light code 48

I took my car to a mechanic to check why the CEL was coming on and code 48 came up, LAF (linear air flow sensor)problem. Has anyone experienced this? I'm getting on average, 28mpg. I'm getting horrible gas mileage for this car. What should be fixed or changed out?
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Old 05-20-2008, 09:47 AM   #2
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48 is lean air fuel sensor
http://www.jdmuniverse.com/forums/sh...ad.php?t=57615

replace the 5wire primary o2 sensor.
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Old 05-20-2008, 10:42 AM   #3
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Quote:
Originally Posted by EH3 View Post
48 is lean air fuel sensor
http://www.jdmuniverse.com/forums/sh...ad.php?t=57615

replace the 5wire primary o2 sensor.
I'm not sure if it's the same, but the mechanic showed me on his computer which said Linear Air Flow Sensor. Either way does this point to changing out the o2 sensor?
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Old 05-20-2008, 11:49 AM   #4
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the scanner has the wrong description.

VX and HX are the only ones with a lean-burn/wideband o2 sensors. i'm 99% sure that's your problem especially given the horrible mileage

search on honda-tech.com
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Old 05-20-2008, 01:30 PM   #5
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It is a linear air flow sensor - it is commonly mistaken as lean. It's called linear because the voltage/lambda relationship is nearly linear - unlike a narrow band sensor which most definitely isn't.

If the CEL stays on all the time and reads code 48, then it's likely the sensor.

If not, the sensor may be fine and you have another problem - misfiring cylinder being the most likely source although there are other possibilities.
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Old 05-20-2008, 02:31 PM   #6
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Either way it's referring to the O2 sensor.
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Old 05-20-2008, 03:49 PM   #7
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Quote:
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Either way it's referring to the O2 sensor.
I'm hoping that if I change out the o2 sensor, it will improve my gas mileage as someone said it would earlier. Did any one here have the same problem, and if so, did changing out the o2 sensor fix it?
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