U016C Diagnostic Trouble Code

U016C 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 U016C diagnostic trouble code may include:

Engine surge
Blown fuse (if applicable)
Lack of power
Hesitation upon acceleration

Possible Causes :

Some aftermarket accessories and performance modifications
A faulty oxygen sensor. This will set a code in itself, however, a faulty oxygen sensor does not automatically condemn the sensor. The code just means that the sensor signal was not within specifications. An air leak or any of the above will cause an erroneous signal. There is a multitude of O2 codes relating to O2 performance which gives a clue to the problematic area.
Rarely - faulty Powertrain Control Module (PCM-programming required after replacement)

Repair Processes :

If the engine displays a miss and there wasn't a code, determine which cylinder is misfiring. If the exhaust manifold is visible, spay or pour a small amount of water on each cylinder exhaust port. Water will evaporate immediately on good cylinders and slowly on the missing cylinder. If this can't be accomplished pull the plugs and check the condition. Look for missing ground strap or a rusty ground where the fuel tank is grounded to the frame. Check for damage to the wiring harness connector. Look for rubbing, scraping, bare wires, worn spots or melted plastic connectors. Pull the connectors apart and carefully look at the terminals (the metal parts) inside the connectors.

Process Tips

Diagnostic trouble code U016C 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 U016C.

Fortunately, U016C is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

U016C Trouble Code For Specific Cars

U016C Alfa Romeo 33 Accelerator Position Sensor Out of Range
U016C Buick 70 Cylinder 4 Injector Circuit Low
U016C Elfin Ms Injection Pump Fuel Metering Control "A" High (Cam/Rotor/Injector)
U016C Bmw 435 Chime Input #2 Circuit Short to Ground
U016C Mazda 6 Transmission Transfer Case Contact Plate 'C' Short Circuit To Ground
U016C Elva Courier Injection Pump Fuel Metering Control "A" Intermittent (Cam/Rotor/Injector)
U016C Honda Hr-v PSD Not Fully Closed (Module Commanded Successfully)