Yonkwa-Dingom has pleaded not guilty to failing, without reasonable excuse, to assist a police constable exercising a search power under the Search and Surveillance Act 2012, and importing the cocaine.
He has elected a jury trial on both charges and was remanded in custody by Judge Deidre Orchard, to reappear in court on May 23.
Yonkwa-Dingom will not be sentenced for possessing cocaine until the outcome of the not-guilty pleas are known.