B0516 Diagnostic Trouble Code

B0516 is a kind of OBD-II Diagnostic B-Body 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 B0516 diagnostic trouble code may include:

Faulty PCM
The light may stay on or light intermittently as the DPF regenerates. The engine will be sluggish on acceleration.
Poor acceleration
Engine surge

Possible Causes :

Rusty exhaust systems, cracked exhaust manifolds or damaged or missing gaskets or donuts will cause air leaks.
An air leak forward of the DPF will change the sensor readings resulting in the code
A large air leak at or near the number one oxygen sensor would also cause a lean mixture.

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. You might continue by connecting the scanner to the vehicle diagnostic connector and retrieving all stored codes and freeze frame data. Find out what kind of system you have and verify that voltage to the fuel level sensor is present at the fuel pump wiring harness.

Process Tips

Diagnostic trouble code B0516 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 B0516.

Fortunately, B0516 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

B0516 Trouble Code For Specific Cars

B0516 Renault Type Xa HO2S Heater Control Circuit Low (Bank 2 Sensor 1)
B0516 Mg Montego Air Suspension Warning Lamp Circuit Failure
B0516 Mercedes E 180 ABS Outlet Valve Coil RR Circuit Short To Ground
B0516 Chrysler 300m Engine Oil Temperature Sensor High
B0516 Mvs Venturi Camshaft Position Sensor Circuit High Input
B0516 Delahaye Type Hydraulic Pressure Unit
B0516 Daihatsu Rocky Glow Plug Circuit High Side, High Input