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Home >> Cadillac >> 1995 >> Seville STS >> Repair and Diagnosis >> External Pages >> Different car >> Section 6 (Engine Controls - Tests W/Codes) >> Pcm Code Charts >> Code P042, Front Oxygen Sensor Lean Signal >> Test Conditions
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Test Conditions

WARNING: This page is about a different car, the 1995 Cadillac Eldorado. However, it is still accessible from the selected car via links, so may be relevant.

Codes P014, P015, P016, P021, P022, P026, P027, P031, P032 and P034 not set. Throttle switch open, throttle angle 5-25 degrees, coolant temperature 180-268°F (82-131°C), oxygen sensor ready (closed loop), RPM at least 800 and MAP at least 32 kPa. Canister purge occurred at full duty cycle for 2 minutes since engine was running and throttle angle 10 degrees or greater. Long term fuel trim not in effect.