The fault was discovered during a routine check.

这个错误是在一次常规检查中发现的。

《牛津词典》

In a routine check on probiotics, she also found something unusual.

对益生菌进行的例行检查，她也发现一些异常。

youdao

A routine check on Brazil's market for loan assignments found different totals for purchases and sales.

一次关于巴西贷款转让市场的例行检查发现购买总额和销售总额不一致。

youdao

The agent, who could face a smuggling charge, was stopped for a routine check at Oslo's Gardermoen Airport on Tuesday.

BBC: SPORT | Football | African | Obi's agent fined for smuggling

Mr Mooney, aged 74, had not had any symptoms of prostate cancer, but was referred by his GP for a routine check.

BBC: Patrick Mooney and Nurse Specialist, Janette Nichol.

The body was discovered at 5:45 a.m. by a police official who was conducting a routine check at the prison, Mr. Gupta said.

WSJ: Probe Ordered in Death of India Rape Suspect