Codes - The 1947 - Present Chevrolet & GMC Truck Message Board Network

bikernut · 10-19-2011, 05:18 PM

I have my 2003 GMC 3500 4x4 with the 6.0 engine set all summer and started it up and I got a check engine light on. I pulled the codes and this is what I got p0134, p0171 and p0300. the truck runs real rough now. what do these codes mean and why did they set from not using it? How do I correct this? last spring when I was plowing snow with it it ran super but not needing it in the summer I didn't use it.

**truckdude239** · 10-19-2011, 06:00 PM

sounds like you need some o2 sensors

clinebarger · 10-19-2011, 10:29 PM

Clear the codes, Does the P0134 come back in a few minutes? If it does perform this test.......

P0134 Heated Oxygen Sensor (Bank 1 Sensor 1) Insufficient Activity
1. Swap Bank 1 Sensor 1 (B1S1) and Bank 2 Sensor 1 (B2S1) O2 sensors.

2. If code P0154 sets, the O2 sensor that was moved to bank 2 is defective.

3. If the same P0134 code sets ground the Purple and Tan wires at the sensor from the Powertrain Control Module (PCM) to a good ground.

4. Voltage should drop to 0 on the scanner for Bank 1 Sensor 1 (B2S1). If doesnt you have a wiring/connection problem.

P0134 & P0171 dont usually set together.....The P0171 might have already been a active code.......

Condition for setting P0171 Fuel Trim System Lean (Bank 1)......

DTC P0053, P0054, P0059, P0060, P0101, P0102, P0103, P0106, P0107, P0108, P0131, P0132, P0133, P0134, P0135, P0137, P0138, P0140, P0141, P0151, P0152, P0153, P0154, P0155, P0157, P0158, P0160, P0161, P0200, P0300, P0442, P0443, P0446, P0449, P0452, P0453, P0455, P0496, P0506, P0507, P1133, P1134, P1153, P1154, P2A01 and P2A04 Are not set; engine speed from 400-6,500 rpm, BARO signal over 74 kPa, ECT signal from -40ºF to +284ºF, IAT signal from -4ºF to +304ºF, MAF signal from 1-150 g/sec, MAP signal from 15-105 kPa, TP angle less than 90%, vehicle speed less than 82 mph, and the PCM detected the Bank 1 Long Term fuel trim weighted average was more than more than a calibrated value for 6 seconds.

bikernut · 10-20-2011, 08:25 AM

where are these sensors located?

usmcchevy · 10-20-2011, 09:21 AM

Quote:

Originally Posted by bikernut

where are these sensors located?

They screw into the exhaust pipes just before the cats. Drivers side is bank 1 passengers side is bank 2

bikernut · 10-20-2011, 05:57 PM

thanks

GCncsuHD · 10-21-2011, 11:00 AM

To add onto ClineBarger's post.

P0300 is a random misfire. This could be, and is likely triggered by the other codes and running rough. Fix the o2 sensor and it may go away.

FYI I had left my 01 6.0 sitting for a couple months, ran it for the first time the other day and got a P0303 (cyl 3 misfire), it lasted for about 5 minutes, I drove it down the road, cleared it, and it hasn't came back since. I think it was just grumpy from not being driven

10-19-2011, 05:18 PM	#1
bikernut Registered User Join Date: Jan 2008 Location: Soutwestern New Hampshire Posts: 145	Codes I have my 2003 GMC 3500 4x4 with the 6.0 engine set all summer and started it up and I got a check engine light on. I pulled the codes and this is what I got p0134, p0171 and p0300. the truck runs real rough now. what do these codes mean and why did they set from not using it? How do I correct this? last spring when I was plowing snow with it it ran super but not needing it in the summer I didn't use it. __________________ 2020 GMC Acadia Denali (Maroon) 2003 GMC 3500 4X4 Dually Dump (Red) 2007 KZ 41KG Toy Hauler (White with stripes) 2015 Harley FLHTCUTG Trike ( Maroon) 1995 Harley FLT (2 tone Red) 1992 Chevy S-10 4x4 Blazer (Dark Red) Last edited by bikernut; 10-19-2011 at 05:25 PM. Reason: misspelling

10-19-2011, 06:00 PM	#2
truckdude239 Senior Member Join Date: Sep 2005 Location: Lewisville, Nc Posts: 10,226	Re: Codes sounds like you need some o2 sensors __________________ David fuller Ase Certified Mechanic Click here to help support our board!! 1971 Chevy c-10 under going a 4.8l LSx swap Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=421305 2007 Honda Accord my daily 145kmiles 2002 Honda Accord 4 door With 330k(sisters car) 2005 toyota Avalon 228k( brothers car) 2002 Sububran 5.3 245k 2000 Tahoe 5.3l 378 General manager for Marco's Carwash & lube

10-19-2011, 10:29 PM	#3
clinebarger Senior Member Join Date: May 2009 Location: Fort Worth, TX Posts: 6,370	Re: Codes Clear the codes, Does the P0134 come back in a few minutes? If it does perform this test....... P0134 Heated Oxygen Sensor (Bank 1 Sensor 1) Insufficient Activity 1. Swap Bank 1 Sensor 1 (B1S1) and Bank 2 Sensor 1 (B2S1) O2 sensors. 2. If code P0154 sets, the O2 sensor that was moved to bank 2 is defective. 3. If the same P0134 code sets ground the Purple and Tan wires at the sensor from the Powertrain Control Module (PCM) to a good ground. 4. Voltage should drop to 0 on the scanner for Bank 1 Sensor 1 (B2S1). If doesnt you have a wiring/connection problem. P0134 & P0171 dont usually set together.....The P0171 might have already been a active code....... Condition for setting P0171 Fuel Trim System Lean (Bank 1)...... DTC P0053, P0054, P0059, P0060, P0101, P0102, P0103, P0106, P0107, P0108, P0131, P0132, P0133, P0134, P0135, P0137, P0138, P0140, P0141, P0151, P0152, P0153, P0154, P0155, P0157, P0158, P0160, P0161, P0200, P0300, P0442, P0443, P0446, P0449, P0452, P0453, P0455, P0496, P0506, P0507, P1133, P1134, P1153, P1154, P2A01 and P2A04 Are not set; engine speed from 400-6,500 rpm, BARO signal over 74 kPa, ECT signal from -40ºF to +284ºF, IAT signal from -4ºF to +304ºF, MAF signal from 1-150 g/sec, MAP signal from 15-105 kPa, TP angle less than 90%, vehicle speed less than 82 mph, and the PCM detected the Bank 1 Long Term fuel trim weighted average was more than more than a calibrated value for 6 seconds.

10-20-2011, 08:25 AM	#4
bikernut Registered User Join Date: Jan 2008 Location: Soutwestern New Hampshire Posts: 145	Re: Codes where are these sensors located? __________________ 2020 GMC Acadia Denali (Maroon) 2003 GMC 3500 4X4 Dually Dump (Red) 2007 KZ 41KG Toy Hauler (White with stripes) 2015 Harley FLHTCUTG Trike ( Maroon) 1995 Harley FLT (2 tone Red) 1992 Chevy S-10 4x4 Blazer (Dark Red)

10-20-2011, 05:57 PM	#6
bikernut Registered User Join Date: Jan 2008 Location: Soutwestern New Hampshire Posts: 145	Re: Codes thanks __________________ 2020 GMC Acadia Denali (Maroon) 2003 GMC 3500 4X4 Dually Dump (Red) 2007 KZ 41KG Toy Hauler (White with stripes) 2015 Harley FLHTCUTG Trike ( Maroon) 1995 Harley FLT (2 tone Red) 1992 Chevy S-10 4x4 Blazer (Dark Red)

10-21-2011, 11:00 AM	#7
GCncsuHD Charlie Daniels w/ a Tq Wrench Join Date: May 2009 Location: Statesville, NC Posts: 1,570	Re: Codes To add onto ClineBarger's post. P0300 is a random misfire. This could be, and is likely triggered by the other codes and running rough. Fix the o2 sensor and it may go away. FYI I had left my 01 6.0 sitting for a couple months, ran it for the first time the other day and got a P0303 (cyl 3 misfire), it lasted for about 5 minutes, I drove it down the road, cleared it, and it hasn't came back since. I think it was just grumpy from not being driven __________________ ΜΟΛΩΝ ΛΑΒΕ 67 C10 Shortbed "Great Grandpa's Truck" I6 3 on the Tree 71k original miles 5.3 swap in the works 69 K5 Blazer-Family Beach Cruiser Project 78 K30 Dually Semi-Retired Fire Truck 350/SM465 35"s SOLD01 2500HD ECSB 6.0 4x4 5.13's 8" lift 38"s



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