Tomorrow's Technician

MAY 13, 2024

This standardized many of the onboard emissions protocols and codes and allowed states to perform onboard emissions testing. As time passed, even large trucks and motorcycles adopted this same method to test the emissions status of a vehicle. Most engine control modules store only one freeze frame record per code.

Check Engine Light 246

Check Engine Light Emissions Testing Engineering Banking 246

RepairSmith

JULY 17, 2024

Definition of Diagnostic Trouble Code (DTC) P0157 Diagnostic Trouble Code (DTC) P0157 stands for “Oxygen Sensor Circuit Low Voltage (Bank 2, Sensor 2).” ” This code appears when the downstream oxygen sensor on Bank 2 shows a low voltage signal for too long.

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Banking Check Engine Light Emissions Testing Engineering 52

RepairSmith

JULY 17, 2024

Definition of OBD-II trouble code P0158: The P0158 code stands for “O2 Sensor Circuit High Voltage (Bank 2, Sensor 2).” ” It shows that the powertrain control module (PCM) detects a high voltage signal from the oxygen sensor located in Bank 2, Sensor 2. Rough Idle : The engine might run unevenly.

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Banking Engineering Check Engine Light Emissions Testing 52

RepairSmith

JANUARY 15, 2024

Starting Issues Since a failing fuel pump won’t send enough fuel to the engine, you’ll face difficulties starting your car. Lit Check Engine Light A bad pump will cause an air-fuel mixture imbalance, which will trigger the Check Engine Light. But how can you confirm fuel pump failure? Let’s find out.

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Check Engine Light Engineering Emissions Testing Mechanic 52