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TSB Revision DIAGNOSTIC TROUBLE CODE PROCEDURES 13Ac-217 DTC P0154: Heated Oxygen Sensor Circuit No Activity Detected (bank 2, sensor 1) . Heated Oxygen Sensor Circuit No Activity • Refer to, DTC P0150 − Left Bank Heated Oxygen Sensor (Front) Circuit • Refer to, DTC P0201, P0202, P0203, P0204, P0205, P0206 − Injector Circuit . CIRCUIT OPERATION • Refer to, DTC P0152 − Left Bank Heated Oxygen Sensor (Front) Circuit • Refer to, DTC P0201, P0202, P0203, P0204, P0205, P0206 − Injector Circuit . TECHNICAL DESCRIPTION • The PCM effects air/fuel ratio feedback control in accordance with the signals from the left bank • If the left bank heated oxygen sensor (front) has deteriorated, corrections will be made by the • DTC P0154 becomes stored in memory if a fail- ure is detected in the above air/fuel ratio feed- . DTC SET CONDITIONS • Engine coolant temperature is higher than 76°C (169 ° F). • Engine speed is higher than 1,200 r/min. • Volumetric efficiency is at between 30 and 80 percent. • Throttle position sensor output voltage is lower than 4 volts. • Except while fuel is being shut off. • Monitoring time: 30 seconds. Judgment Criteria • Left bank heated oxygen sensor (front) output voltage does not get across 0.5 volt within about . TROUBLESHOOTING HINTS (The most likely • Left bank heated oxygen sensor (front) deterio- rated. • Open circuit in left bank heated oxygen sensor (front) output line. • Open circuit in left black heated oxygen sensor (front) ground line. • Left bank heated oxygen sensor (rear) deterio- rated. • PCM failed. |