U3116 Diagnostic Trouble Code

U3116 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 U3116 diagnostic trouble code may include:

Hesitation upon acceleration
Excessive exhaust leak
Rich or lean exhaust
The light may stay on or light intermittently as the DPF regenerates. The engine will be sluggish on acceleration.

Possible Causes :

Rough running engine due to misfiring plugs. Many engines have misfire codes to indicate the cylinder effected, such as P0307 for number 7.
Rarely - faulty Powertrain Control Module (PCM-programming required after replacement)
Some aftermarket accessories and performance modifications

Repair Processes :

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. 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. If all testing has passed so far yet you still have the same code, check your scan tool and see if it can open and close the IMRC valve.

Process Tips

Diagnostic trouble code U3116 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 U3116.

Fortunately, U3116 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

U3116 Trouble Code For Specific Cars

U3116 Renault Latitude Hazard Flash Output Circuit Open
U3116 Volvo 740 SCP (J1850) Invalid or Missing Data for Electrical Energy Management
U3116 Vauxhall Viscount Pressure Control Solenoid Performance or Stuck Off
U3116 Panhard Pl Driver Power Window Up Circuit Open
U3116 Citroen Six Fuel Pump Secondary Circuit Low, High Speed
U3116 Mercedes-benz 260 Air Bag Passenger Circuit Short To Battery
U3116 Ferrari 225 Injector High Sides Shorted Together