U1136 Diagnostic Trouble Code

U1136 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 U1136 diagnostic trouble code may include:

The light may stay on or light intermittently as the DPF regenerates. The engine will be sluggish on acceleration.
Faulty PCM
If the DPF is not cleared the ECU will revert to the "Limp Home Mode" until the situation is corrected
Diminished fuel efficiency

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.
Fuel with a large percentage of sulfur will clog the DPF quickly

Repair Processes :

If you find a related TSB, the information will often help in diagnosing the code in question as TSBs are crested from many thousands of repairs. With the valve disconnected, the red voltmeter lead should be attached to the IMRC valve power wire and the black voltmeter lead connected to ground. Look at the plug wires to make sure they are not burnt or laying on the exhaust.

Process Tips

Diagnostic trouble code U1136 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 U1136.

Fortunately, U1136 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

U1136 Trouble Code For Specific Cars

U1136 Nissan Pintara Cooling Fan Driver Fault
U1136 Shelby Super Cars Ultimate Intake Air Temperature Circuit Low Input
U1136 Peugeot 404 EGRCHK Solenoid Circuit Malfunction
U1136 Ferrari Ks Invalid Test - Accelerator Pedal Movement
U1136 Ford Wind Motor # 1 Input Circuit Short to Gnd
U1136 Mahindra Scorpio Traction Control Valve RF Circuit Open
U1136 Porsche Panamericana Fuel Pump Speed Control Circuit Malfunction