Code 71 (Calif.)

Condition is: temperature of EGR temperature sensor is less than 158°F (70°C) for 1-4 minutes with engine temperature at more than 145°F (63°C). Probable cause: open EGR temperature sensor circuit, short in EGR Vacuum Switching Valve (VSV) circuit (GS300 & SC300), EGR hose disconnected, EGR valve stuck, clogged EGR passage or defective ECM.