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Diagnostic Trouble Codes

One of the most important components of your exhaust system is the catalytic converter. We’ve all heard of it, many of us have had to replace one, but many people have no idea what it does. Put simply, the catalytic converter, commonly called a cat, converts some of the more dangerous substances in your engine exhaust into safer emissions. The process uses a catalyst to initiate a chemical reaction in the combustion emissions. Most models used today are called three way converters, because they convert the three most abundant pollutants into less toxic substances. Carbon Monoxide and excess Hydrocarbons are oxidised to create carbon dioxide and water, and nitrogen oxides undergo a reduction reaction to produce nitrogen.

P0420

P0430

P0300

P0301

P0302

P0303

P0304

P0128

P0171

P0174

P0401

P0455

Catalyst system efficiency below threshold (bank 1)

Catalyst system efficiency below threshold (bank 2)

Random/multiple cylinder misfire detected

Cylinder 1 misfire detected

Cylinder 2 misfire detected

Cylinder 3 misfire detected

Cylinder 4 misfire detected

Coolant thermostat (coolan temp bleow thermostat regulating temperature)

System too lean (bank 1)

System too lean (bank 2)

Exhaust gas recirculation flow insufficient detected

Evaporative emission control system leak detected (large leak)

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