U0016 Diagnostic Trouble Code

U0016 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 U0016 diagnostic trouble code may include:

Engine surge
Blown fuse (if applicable)
Lack of power
The light may stay on or light intermittently as the DPF regenerates. The engine will be sluggish on acceleration.

Possible Causes :

An air leak forward of the DPF will change the sensor readings resulting in the code
Rusty exhaust systems, cracked exhaust manifolds or damaged or missing gaskets or donuts will cause air leaks.
Rarely - faulty Powertrain Control Module (PCM-programming required after replacement)

Repair Processes :

If the scan tool has that capability, and the scan tool can operate the IMRC valves, then the problem is either resolved and a simple code clearing is all that's left or a new PCM would be called for. 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. Replace the oxygen sensor that is downstream from the catalytic converter on the side of the engine that does not contain cylinder #1. Also, if a oxygen sensor code stating "heater circuit malfunction" the sensor has most probably failed.

Process Tips

Diagnostic trouble code U0016 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 U0016.

Fortunately, U0016 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

U0016 Trouble Code For Specific Cars

U0016 Honda S800 Recirculation Override Circuit Malfunction
U0016 Bentley Arnage Battery Power Relay Circuit Short To Ground
U0016 Riley Mph HPU (Hydraulic Pump Unit) Pressurisation Failure
U0016 Honda Vamos Reverse Mirror Output Circuit Short to Ground
U0016 Ford E-150 Manifold Absolute Pressure/Barometric Pressure Circuit Range/Performance Problem
U0016 Daf 600 Gear Lever Y Position Circuit
U0016 Jac J5 Seat Driver Backward Circuit Failure