- sön 06 mar 2016, 22:02
#1055580
Gissar att jag bör byta den bakre lambdasonden. Lampan har tänts igen, och koderna som blir är
EFI-153; In order for the rear sensor to be able to monitor the three way catalytic converter and affect fuel trim, it must be at operating temperature and at the correct output voltage. Monitoring begins 3 minutes after start of the preheating. If the output voltage is different than the permitted values the code 153, Rear HO2 sensor signal missing or faulty is set.
EFI-425; the rear sensor ensures the front is adjusting integrator values correctly, if all positive or negative, the rear sensor can be used to fine-tune the front sensors inputs. Tuning in only one direction by the rear sensor will set code 425, rear HO2 sensor control faulty.
EFI-436; the ECM monitors the compensation being made by the rear sensor and sets this code when excessive compensation is being called for. Note: the front sensor can cause this code to be set in the rear.
Erik
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