Measuring the temperature of the catalytic converter in your Cobalt can also help you with determining possible inner restrictions causing excessive back pressure. Therefore it is necessary to investigate the issue thoroughly before you consider replacing the very expensive catalytic converter in your Cobalt. However, this is not always the case, as a bad oxygen sensor can also trigger catalytic converter codes.
#2006 chevy cobalt oxygen sensor code#
If you see any fault code from P0420 to P0424 or from P0430 to P0434 in the OBD2 scanner, it indicates a problem with the catalytic converter. Reading out the fault codes using a diagnostic device is relatively reliable.
#2006 chevy cobalt oxygen sensor how to#
How to check for a bad catalytic converter in Chevy Cobalt? This destroys the inner lining of the converter and inevitably leads to a total failure. Any unburnt fuel in the engine that goes into the exhaust system will ignite in the catalytic converter. This commonly happens due to a bad upstream oxygen sensor, but can also happen due to a bad MAF sensor or worn spark plugs. when too much fuel is injected into the combustion chambers and there isn’t enough air, can damage the catalytic converter in Chevy Cobalt. Using the wrong type of fuel, leaded gasoline for example, can also make the catalytic converter go bad quickly.Ī fuel mixture that is too rich, i.e. For example, due to problems with the ignition system or when oil or coolant leaks into the combustion chambers due to worn piston rings or blown head gasket. However, it can fail much earlier due to contamination, overheating or physical damage. There are many factors that affect its service life, but typically catalytic converters last for around 100,000 miles or 10 years in Cobalt. If these pores get clogged, the exhaust gases cannot pass through. Catalytic converters contain honeycomb-like structures with tiny pores that are coated with platinum, rhodium, or palladium depending on the catalyst stage. Over time, carbon deposits accumulate and clog up the catalytic converter, especially if the vehicle has racked up a lot of miles. Causes for catalytic converter failure in Chevy CobaltĪll catalytic converters fail eventually since its a wearing part. With a noticeable loss of performance, high fuel consumption and more harmful emissions at the tailpipe, a defective catalytic converter should definitely be considered. This causes the vehicle to fail an emissions test. When the catalytic converter in Cobalt is broken, it loses its ability to properly filter out toxic exhaust gases coming from the engine. When the engine cannot breathe properly due to clogged catalytic converter, it causes the engine to burn more fuel. Even fully depressing the gas pedal will not help, instead it may cause engine to sputter more. But after reaching a certain speed, the performance of the engine will drop due to blockage of increasing exhaust gases in the system. When you press the gas pedal from a stopped position, the vehicle may accelerate normally initially.
The most obvious sign of clogged catalytic converter in Chevy Cobalt is slow acceleration or degraded engine performance.
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