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HINT: Bank 1 refers to the bank that includes No. 1 cylinder. Bank 2 refers to the bank that does not include No. 1 cylinder. Sensor 1 refers to the sensor closest to the engine assembly. Sensor 2 refers to the sensor farthest away from the engine assembly. MONITOR DESCRIPTION The ECM uses information from the Air-Fuel Ratio (A/F) sensor to regulate the air-fuel ratio and keep it close The A/F sensor detects oxygen levels in the exhaust gas and transmits the information to the ECM. The inner The zirconia element generates a small voltage when there is a large difference in the oxygen concentrations The A/F sensor is more efficient when heated. When the exhaust gas temperature is low, the sensor cannot When the current in the A/F sensor heater is outside the normal operating range, the ECM interprets this as a Example: The ECM sets DTC P0032 or P0052 when the current in the A/F sensor heater is more than 10 A. Conversely, P0031 Air-Fuel Ratio (A/F) sensor heater current less than 0.8 A (1 A/F sensor heater (for Integration relay ECM P0032 Air-Fuel Ratio (A/F) sensor heater current fail (1 trip Short in A/F sensor heater A/F sensor heater (for Integration relay ECM
2008 Toyota Tundra 2008 ENGINE PERFORMANCE Engine Control System (2UZ-FE) - Tundra
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