U3836 Diagnostic Trouble Code

U3836 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 U3836 diagnostic trouble code may include:

Misfire
Misfire
The light may stay on or light intermittently as the DPF regenerates. The engine will be sluggish on 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
Defective ECU strategies or components will prevent proper regeneration

Repair Processes :

Look at the plug wires to make sure they are not burnt or laying on the exhaust. Pack the connector cavity with dielectric silicone compound (same stuff they use for light bulb sockets and spark plug wires) and reassemble. 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 U3836 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 U3836.

Fortunately, U3836 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

U3836 Trouble Code For Specific Cars

U3836 Maserati Levante Transmission Fluid Pressure Sensor/Switch F Circuit
U3836 Skoda 445 Keyless Entry Circuit Short To Battery
U3836 Buick Velite Damper LF Circuit Short To Battery
U3836 Lagonda 16 Shift Solenoid D Control Circuit Low
U3836 Trabant P70 Passenger Sid, Side mount Airbag Low capacitance on Squib
U3836 Simca 1501 Intake Valve Control Solenoid Circuit High (Bank 2)
U3836 Volkswagen Passat B5 Right Rear Stop lamp Circuit Short to Battery