The officer collided with a vehicle driven by a member of the public.
The left side of the police car's bumper was falling off but the other car involved came out second best with the entire front crumpled.
Police spoke with the driver at the scene.
In July the Herald revealed the officer had been summonsed to appear in court.
He was charged after a review into the incident.
He remained on active duty while his case progressed.
On Friday he appeared in the Auckland District Court was granted diversion.
Diversion is a scheme that gives a second chance to "first-time offenders who commit minor offences".
It is run by the police prosecution service and eligible offenders are effectively dealt with outside court and avoid a formal prosecution.
Auckland District Commander Superintendent Karyn Malthus acknowledged the resolution of the case.
"Our officers do from time-to-time make mistakes including having traffic accidents and they are held accountable like any other member of the public," she said.
"The officer involved remains on active duty and is a valued member of the New Zealand police."