U216C Diagnostic Trouble Code

U216C is a kind of OBD-II Diagnostic U-Network Diagnostic Trouble Code.

It is considered generic because it applies to all makes and models of vehicles, although specific repair steps may be different depending on your car model.

Symptoms

Symptoms of a U216C diagnostic trouble code may include:

Engine surge
Blown fuse (if applicable)
Lack of power
Rich or lean exhaust

Possible Causes :

Faulty IMRC actuator relay (if equipped)
A large air leak at or near the number one oxygen sensor would also cause a lean mixture.
Rarely - faulty Powertrain Control Module (PCM-programming required after replacement)

Repair Processes :

Use the DVOM to test resistance and continuity on all system circuits if actuator and sensor resistance levels are in compliance with manufacturer's specifications. With the valve disconnected, the red voltmeter lead should be attached to the IMRC valve power wire and the black voltmeter lead connected to ground.

Process Tips

Diagnostic trouble code U216C is not difficult to diagnose and repair. Thus, it always pays to have a qualified technician to look after your vehicle should this error code arise.

Diagnosing this code requires the engine to be in good running shape, without unmetered air entering the engine. If other codes that relates to misfiring condition, lean running or air entering the engine is present, then you must first fix those error codes before U216C.

Fortunately, U216C is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

U216C Trouble Code For Specific Cars

U216C Citroen Nemo Fuel Pump Primary Circuit Malfunction
U216C Renault Clio 5 Gear Shift Position Circuit [senses forward / rearward position, odd / even gears]
U216C Ford Lotus-cortina Mirror Driver Up Circuit Open
U216C Diana Straight Hydraulic Pump Relay Circuit High
U216C Trabant 601 Passenger Sid, Side mount Airbag Circuit Short to Ground
U216C Lotus Xi Traction Control Output Circuit Malfunction
U216C Bmw 328 Charging System Fault