xc70 2.5t code p2187 ou code volvo ecm 216c?

bonjour, qqun a t il une idee a propos de ce code? troubleshooting? aucune reaction bizarre de la voiture... merci!

[rj240]

ECM-216C Long-term fuel trim, bank 1. Signal too high, B5254T2

Diagnostic trouble code (DTC) information ECM-216C

Condition
The engine control module (ECM) receives information from the heated oxygen sensor (HO2S) (bank 1) about the fuel / air mixture when idling and at both the upper and lower part-load range. If the fuel / air mixture deviates from λ=1, the short-term fuel trim will compensate for this by adjusting the injection time so that λ=1 is achieved. When the short-term fuel trim makes an adjustment, the integrator median must be adjusted by the long-term trim. The diagnostic trouble code (DTC) will be stored when the long-term trim must be adjusted almost to maximum in the idle range.

Substitute value
None.

Possible source
Intake air leakage
Air leakage in the exhaust system
Damaged heated oxygen sensor (HO2S) (bank 1).

Fault symptom[s]
None.