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Table 2, Trouble Codes (Trouble Code 121 O2 Sensor 2 Lean Exhaust) Opel Omega B

Table 2, Trouble Codes

Trouble CodeInformation Sensor
Cause of FaultRemedy in

F0: DATA LIST

No.Trouble Code Storage when
12102 SENSOR 2 LEAN EXHAUST46, 48, 52, 54, 56· Oxygen sensor integrator (internal control unit value for evaluation of oxygen sensor regulation) has exceeded upper limit of 1.2

(mixture constantly too lean)

Thereafter for at least 15 s:

· Coolant temperature lower than 107° C / 225° F

· Intake air temperature lower than 30° C / 86° F

· Trouble codes 73 and 74 not recognized

· Engine load signal for longer than

X 25 XE: 0.8 ms

X 30 XE: 0.9 ms