On 27 February 2020, a power fault along the NEL resulted in service disruptions to the Punggol, Sengkang and Buangkok stations. At 5.36am, a shuttle train service was provided which operated on a single platform between the Punggol and Buangkok stations. In order to facilitate maintenance functions, the power source to the tracks between the Hougang and Punggol stations was switched off. Additionally, free regular and bridging bus services have been provided to serve these stations. The repair works were completed by 11.49am and usual service along the entire NEL resumed at 12.14pm. Investigations later revealed that a broken contact wire affected the power source to trains launching from Sengkang Depot, causing the service disruptions.