P102 and 02 sensor Codes
Thread Starter
TECH Fanatic
iTrader: (10)
Joined: Nov 2001
Posts: 1,237
Likes: 1
From: Belleville, IL
P102 and 02 sensor Codes I've been getting P102 Low Maf Voltage codes and a few varying 02 sensor codes. I looked under the hood and found the sensor fuse had been blown. I replaced the fuse and checked it again the next day and found the fuse is still blown. I'm pretty sure there is a short in the wiring harness but where is a good place to look? Has anyone had this problem? Any other advice?
Teching In
Joined: Jan 2004
Posts: 3
Likes: 0
From: DFW
I have the same... '99 LS1 SS. Haven't found a burnt wire though. My fuse will last 1-2 days then pop. My guess is that all the following sensors are on that circuit.
The following codes are found by LS1 edit:
P0-102 Mass Air Flow [MAF] Sensor Circuit Low Frequency
P0-135 HO2s Heater Circuit Bank 1 Sensor 1
P0-135 HO2s Heater Circuit Bank 1 Sensor 2
P0-135 HO2s Heater Circuit Bank 2 Sensor 1
P0-135 HO2s Heater Circuit Bank 2 Sensor 2
P0-7019 Brake Switch 2 Circuit Low Voltage
Any one have any ideas?? This is really a bummer. When that fuse blows the car gets rich and runs like crap (no functional MAF!). HELP!
The following codes are found by LS1 edit:
P0-102 Mass Air Flow [MAF] Sensor Circuit Low Frequency
P0-135 HO2s Heater Circuit Bank 1 Sensor 1
P0-135 HO2s Heater Circuit Bank 1 Sensor 2
P0-135 HO2s Heater Circuit Bank 2 Sensor 1
P0-135 HO2s Heater Circuit Bank 2 Sensor 2
P0-7019 Brake Switch 2 Circuit Low Voltage
Any one have any ideas?? This is really a bummer. When that fuse blows the car gets rich and runs like crap (no functional MAF!). HELP!
Teching In
Joined: Jan 2004
Posts: 3
Likes: 0
From: DFW
darn cut and paste... other O2 codes are:
P0-135 HO2s Heater Circuit Bank 1 Sensor 1
P0-141 HO2s Heater Circuit Bank 1 Sensor 2
P0-155 HO2s Heater Circuit Bank 2 Sensor 1
P0-161 HO2s Heater Circuit Bank 2 Sensor 2
P0-135 HO2s Heater Circuit Bank 1 Sensor 1
P0-141 HO2s Heater Circuit Bank 1 Sensor 2
P0-155 HO2s Heater Circuit Bank 2 Sensor 1
P0-161 HO2s Heater Circuit Bank 2 Sensor 2
Teching In
Joined: Jan 2004
Posts: 3
Likes: 0
From: DFW
got IT Same here, found a exposed wire on circuit #539. It was touching the steering rack occasionally and popping the fuse at odd times. This also explains the sudden and haphazard drag on my charnging system that I couldn't explain. Wrapped the wire, replaced the fuse and all is well!
Now that I have a MAF again and air/fuel are being mixed its off to the track
Now that I have a MAF again and air/fuel are being mixed its off to the track
