If you have any doubt as to repairs on your vehicle, please contact your technician. I appreciate the tips I've read here at gm-trucks. Sometimes the stutter feels like the engine might stall. At least bracket and harness was the same. This often turns out to be the sensor.
An engine that is running lean could set this code, but usually there will be lean codes P0171 Chevrolet, P0174 Chevrolet present. P0131 Front Heated Oxygen Sensor Bank 1 harness is open or shorted. It has been having a hard time starting on first start up so I checked the fuel pressure and builds up nice and then drops fast. Basically this means that an oxygen sensor in bank 1 detected a lean condition too much oxygen in the exhaust. Bank 1 Sensor 2 is located to the rear of the catalytic converter and should produce an output signal relative to oxygen storage capacity of the catalytic converter. If the Check Engine light remains out for a day or so, but comes back on, re-read the code to see if the same code is present. My concern in this case is all 4 sensors going at one time leads me to beleive that there is something upstream causing the problem.
P0157 code definition Oxygen Sensor Circuit Low Voltage Bank 2 Sensor 2 What the P0157 code means The oxygen sensor that trouble code P0157 refers to, is located in the rear of the exhaust and behind the catalytic converter. The o2's only monitor the exhaust. The o2 sensor depends on the heater to warm it up so it can start working quicker. If the oxygen in the exhaust gas decreases, the air-fuel ratio becomes Rich. A heated o2 sensor is capable of switching between 0.
I really do not want to change out more than one. P0137 means the O2 oxygen sensor's voltage remained low for longer than 2 minutes. I find it's best to take it off and spray it with electronics cleaner or brake cleaner. Usually heater problems have codes associated with them, too. The information contained on this site is presented for informational purposes only. For optimum catalyst operation, the air fuel mixture air-fuel ratio must be maintained near the ideal stoichiometric ratio.
Have always done regular oil changes myself and have always inspected for impurities. I have seen issues before on aftermarket o2 sensors. Check engine light came back to mock me again. Essentially the same as P0136, P0137 refers to the second oxygen sensor on Bank 1. Consult your service manual for it's location if you need help.
The Engine Control Module adjusts the fuel injection time so that the air-fuel ratio is nearly stoichiometric. However if you have other codes present, like lean codes or pre-o2 sensor codes, then they may cause drivability problems as well as P0143 Chevrolet. I have a 2001 silverado 4. The random misfire may be symptomatic of the o2 sensor problem. However, a properly working post-catalyst sensor will exhibit small changes at a slower rate than front pre-catalyst o2 sensors.
Proper fuel pressure should be at 40 psi. Check for harness making contact with exhaust components. But it can also be an expensive diagnostic tool, especially if it turns out to be a wiring issue, instead of a sensor. Bank 1 Sensor 2 is located to the rear of the catalytic converter and should produce an output signal relative to oxygen storage capacity of the catalytic converter. If you find the heater element bad, replace the sensor. If you have other electrical demons.
This changing resistance affects the 0. This truck came in with 36000 miles showing and a check engine light on part of the time. I have reset it several times, and usually returns within 10 miles. Check pins for damage, and for moisture. One thing it says is low fuel pressure could cause the code, would bad check valve at the fuel pump cause this? Will check the fuse but what else is left to correct or get that the little light off. Make sure that there is battery voltage present and ground present for the o2 sensor heater. Sometimes it's the rear right, sometimes the rear left.