Also, it allows the system to remain in closed loop operation during periods of extended idle. Now the scan tool should read low or near zero volts. Not though that, a post-catalyst oxygen sensor normally switches fewer times and slower than front pre-cat O2 sensors. The last person that had it was my son in law. It is capable of varying between approximately 0. The P0158 trouble code is considered serious if it is causing the car to stall out. Got rid of some codes by tuning up the engine,spark plugs,pcv valve and air cleaner.
Engine miss or runing rich is the leading cause of cat code? If it does, the wiring is good. Disclaimer: Warnings And Caution If you follow the procedures, techniques and methods shown in this video, be aware that you follow them at your own risk. Start by measuring the fuel pressure and checking whether you have bright white-bluish spark at all four plugs. There should be a perfect balance in the mixture level of oxygen and gas, as neither lean nor rich is good for the catalytic converter as both can cause it to fail prematurely. The solution is here : Chevrolet Silverado P0158 Possible Solution : The crankshaft sensor signals the fuel injection computer or the ignition control when the cylinders are firing. Replacement of the incorrect oxygen sensor is also a possibility.
She hit the pole on the drivers' side from the front of the wheel well flare to the gas filler door. Check for continuity on the two lines. The light could mean a costly problem, like a bad catalytic converter, or it could be something minor, like a loose gas cap. Open the harness and visually inspect the wiring for problems on the signal wire. For optimum catalyst operation, the air fuel mixture air-fuel ratio must be maintained near the ideal stoichiometric ratio.
This heater element is supplied usually with 12V feed from power distribution center and ground. The mechanical timing is also something that you should check, as we mentioned above. Also check that the heater element is being supplied good battery voltage. Definition This error code refers to the O2 sensor behind the catalytic converter, at the back side of the exhaust. What causes the P0158 code? Maintaining correct sensor temperature at all times allows the system to enter into closed loop operation sooner. This oxygen sensor is located behind the catalytic converter. These vary according to the O2 level content in the exhaust.
Variations of greater than 10-percent in either direction will result in a stored code and an illuminated malfunction indicator lamp. They will check the voltage reading to see if the oxygen sensor switches from low voltage to high voltage every few seconds. This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Inspect for holes, wiring harness making contact with exhaust, etc. Changes in the resistance affect the 0.
If you know where the sensor is, you only have to unclip the old sensor and replace it with a new one. Then, remove the cylinder head bolts label for easy re-installation Adjust the jaws of the valve spring compressor until they touch the top and bottom of the valve chamber Push the tool in to compress the spring and tighten the jaws Remove the retainers and lift out the valves , compressors and springs P0158 engine code provides below are generic codes that may not apply to all vehicles. If it is the cat bad they are under federal warranty for 80k or 8 years. If your are for a different car, select that vehicle series before searching for the diagnostic codes because not all used by one manufacture are used by the other makes. When an engine is running lean, it means that there is more oxygen than fuel in the exhaust gases. Last person that changed plugs likes to tighten everything with all his might. How do you troubleshoot code P0158? The other two wires are for the heater element of the O2 sensor, and it works by allowing the sensor to warm up faster, and ultimately get the engine to enter closed loop faster, reducing startup emissions.
How is the tune up. P0158 Engine Trouble Code Meaning of P0158 engine trouble code is a kind of powertrain trouble code and when your car's 'P0158 Check Engine' light comes on, it's usually accompanied by a sinking feeling in the pit of your stomach. Bank 2 typically denotes the engine bank of the engine block that does not contain the number 1 cylinder. So you should chech it on our car models. Symptoms These could include a lean or rich condition in the engine, decreased fuel efficiency, black smoke from the tailpipe, and an illuminated service engine soon lamp. For optimum catalyst operation, the air fuel mixture air-fuel ratio P0158 code.
Unfortunately, due to inconsistencies in engine operation, air and fuel temperature, fuel composition, and a number of other factors, exhaust chemistry can be far from ideal. Anyway, after this incident, the C. Make sure there is no contact with hot exhaust components. If the oxygen in the exhaust gas increases, the air-fuel ratio becomes Lean. Starting letter P diagnostic code shows that there are problems in engine, transmission and emissions systems.
We are not responsible for any actions you take on your vehicle. If the sensor is working properly it switches from low voltage high levels of oxygen to a high voltage low levels of oxygen. Common Symptoms Check Engine light is the most obvious symptom for Error Code P0158, as it will not usually cause drivability issues, since it only suggests an input that measures the efficiency of the catalyst unlike the front Oxygen sensors. Now don't ask yourself; What should you do with P0158 code? Lean mixture of O2 and gas means there is too much oxygen in the exhaust, while rich mixture of O2 and gas means there is not enough oxygen in the exhaust. This problem should be addressed as soon as possible to avoid drivability issues.