code numbers
TECH Senior Member
Joined: Nov 2001
Posts: 7,036
Likes: 1
From: Lake Zurich, IL
P0135 HO2S Heater Circuit Bank 1 Sensor 1
P0155 Heated Oxygen Sensor Heater Circuit (bank 2, sensor 1)
P0102 Mass Air Flow Sensor Circuit Low Frequency
P0803 1-4 Upshift (Skip Shift) Solenoid Control Circuit
Not sure if the skipshift is on the same circuit... but the O2s and MAF are on the same circuit.. so if engine sensor blows, it'll set all those codes
It also puts you into Open Loop Speed Density... which a car not tuned for it will run like complete ***
Now the trick is... why did the fuse blow (If that's it) ... check the O2 wires... I bet one is hitting the header and the wire melted through
P0155 Heated Oxygen Sensor Heater Circuit (bank 2, sensor 1)
P0102 Mass Air Flow Sensor Circuit Low Frequency
P0803 1-4 Upshift (Skip Shift) Solenoid Control Circuit
Not sure if the skipshift is on the same circuit... but the O2s and MAF are on the same circuit.. so if engine sensor blows, it'll set all those codes
It also puts you into Open Loop Speed Density... which a car not tuned for it will run like complete ***
Now the trick is... why did the fuse blow (If that's it) ... check the O2 wires... I bet one is hitting the header and the wire melted through
Thread Starter
TECH Enthusiast
Joined: Apr 2004
Posts: 577
Likes: 0
I did just recently splice those wires, so there could be a problem there. I am going to check the engine sensor right now and all of those fuses. I might just have a bad connection on those sensors, or hope to god i do.
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Teching In
Joined: Sep 2004
Posts: 19
Likes: 0
I'm having some problems with my car. Running really crappy, idle issues, really boggy when giving gas...ect...ect.
I took the car to autozone yesterday and it threw 4 codes...
P0121 - TPS/Pedal Position
P0154 - O2 Sensor
P0300 - Random/Mutiple Cylinder Misfire
P0412 - Secondary Air Injection System
I have no idea what would cause these codes. I tried replacing the TPS in the parking lot and it didn't fix the problem. Hopefully it may be just a blown Engine Sensor Fuse?
Does anyone know the part number for the engine sensor so I can maybe try that?
Thanks,
Ryan
I took the car to autozone yesterday and it threw 4 codes...
P0121 - TPS/Pedal Position
P0154 - O2 Sensor
P0300 - Random/Mutiple Cylinder Misfire
P0412 - Secondary Air Injection System
I have no idea what would cause these codes. I tried replacing the TPS in the parking lot and it didn't fix the problem. Hopefully it may be just a blown Engine Sensor Fuse?
Does anyone know the part number for the engine sensor so I can maybe try that?
Thanks,
Ryan
TECH Senior Member
Joined: Nov 2001
Posts: 7,036
Likes: 1
From: Lake Zurich, IL
just go under the hood and pull the fuse (it's marked on one of the underhood fuse boxes) . you can tell by looking at it if it's blown or not.. if it is blown Radio Shack carries what you need (just go in w/the fuse)
Your situation doesn't sound like a blown engine sensor fuse though... when this started hapening was it after any mods? Probably want to start a new thread to get more ideas/responses
Your situation doesn't sound like a blown engine sensor fuse though... when this started hapening was it after any mods? Probably want to start a new thread to get more ideas/responses