While the symptoms of code P0038 are much the same on all vehicles, the severity of one or more symptoms may differ from vehicle to vehicle. Some aftermarket fuel and oil additives contain silicone-based compounds that can cause deposits to form on spark plugs and oxygen sensors. Also keep in mind that a vehicle in this condition emits harmful pollutants into the air. It is also important to make sure the oxygen sensor wrench is attached to the sensor properly to prevent stripping during the removal process. This data can be useful in cases where an intermittent fault is diagnosed later on. Since I have otherwise had no other problems, and no other codes present how likely is it to be just a faulty O2 sensor? The O2 Oxygen Sensor Circuit High Voltage Bank 1, Sensor 2 can usually be found within the catalytic converter.
These could be symptoms like rough idling, engine failing, the lean running of the engine, bad fuel economy, and engine lag. Read also: If you or your mechanic uses a diagnostic scanning tool on the powertrain and it generates engine code P0138, then you know the problem is with O2 Oxygen Sensor Circuit High Voltage Bank 1, Sensor 2. The ticking can be caused by an exhaust leak. All four codes refer to the heating element circuit! I haven't seen smoke in the exhaust, but I haven't been looking either. Hope helps remember to rate this.
Need help with a P0138 code? If the sensor was replaced and the wiring is in good shape, the code scanner should indicate a reading that falls close to the mid-point between a rich-, and lean running condition. If the sensor has a problem it will set a new code for bank 2. I had to use heat for my sensor 2 and that took awhile with good access. What causes the P0138 code? Bank 1, sensor 1 is the O2 sensor located upstream of the catalytic convertor on bank 1 of the engine, which is whatever side the 1 cylider is located on. Will let you know how it turns out. Heating the element electrically brings the sensors into operation much sooner than would have been the case if the sensors were heated by the exhaust stream; by bringing the sensors into operation sooner, emissions are reduced significantly.
The engine control unit is the computer which regularly monitors and communicates with these sensors. Do a visual check of the connections as well as using a Volt Ohm meter for wire connections. Want the best online repair manual? I have read that sensor 1 access can be done with removing the windshield wiper cowling area. There are two modes of oxygen cylinder — lean below 300mV and rich above 750 mV. Thanks for your help, Ed. If the O2 Sensor body has a chalky appearance, this indicates lag between phases and should be replaced. The driver may experience an increase in fuel consumption.
Provided are flow charts for those codes if they are to appear. How do you troubleshoot code P0138? And I wish I didn't waste my money on the rear sensor but oh well lol. Oxygen sensor issues The oxygen sensor measures the amount of oxygen in the exhaust, telling the computer whether there is too much or too little fuel being injected. What are the common causes of code P0038? If the oxygen in the exhaust gas decreases, the air-fuel ratio becomes Rich. Look for damaged, shorted, burnt, or broken wiring and connectors.
What is repair and tune up history? There's a capacitor in there that is likely open. Oxygen sensors are located within the exhaust stream, there is at least one oxygen sensor located before the catalytic converter and typically one in each exhaust manifold. A vehicle with a cylinder in a bad condition also emits harmful gasses such as the hydrocarbons and nitrogen oxides that pollute the environment. PriusChat is the one of the largest privately-owned car forums left on the internet. Modern vehicles have in them, also known as O2 sensors. What repairs can fix the P0138 code? A leaking fuel injector could possibly be another cause.
However, if the voltage output of the sensor is not under 1. . Bank one is the bank that 1 cylinder is on, so the sensor that is defective is the 2nd sensor back on that sides exhaust pipe. If you get no response, suspect a sensor or circuit fault. Since this code means high signal voltage from post cat.
Those decisions won't be accurate or provide the lowest emissions and best fuel mileage but they will keep the engine running. If it is ahead of the catalytic converter, in between the puffs of exhaust gas flow the momentum will create little puffs of vacuum. This sensor monitors oxygen levels in the exhaust stream. If the oxygen in the exhaust gas increases, the air-fuel ratio becomes Lean. The older Accords,98,99 had troubles with the converters. These inconsistent readings are often the reason to believe the circuit is losing voltage or ground into the O2 Sensor circuit.
The Engine Computer will respond by adding more fuel but there will still be that extra oxygen there. P0136-139 are for oxygen sensor circuit malfunction, B1S2. If the oxygen in the exhaust gas increases, the air-fuel ratio becomes Lean. With all that climbing the light never came on. The only way to set this code is to have a break in the sensor's ground wire or the signal voltage wire is shorted to the 12 volt heater wire for that sensor.