U11D7 Diagnostic Trouble Code

U11D7 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 U11D7 diagnostic trouble code may include:

Fuel pressure too low
Rich or lean exhaust
Diminished fuel efficiency
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.
Faulty IMRC actuator/sensor

Repair Processes :

You might continue by connecting the scanner to the vehicle diagnostic connector and retrieving all stored codes and freeze frame data. 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.

Process Tips

Diagnostic trouble code U11D7 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 U11D7.

Fortunately, U11D7 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

U11D7 Trouble Code For Specific Cars

U11D7 Bristol 408 Crankshaft Position (CKP)/Ignition Coil - Cylinder 4 - Early Activation Fault
U11D7 Volvo 142
U11D7 Ford Rs Mirror Passenger Left Circuit Short To Ground
U11D7 Daihatsu Terios 2 Glow Plug/Heater Indicator Circuit Malfunction
U11D7 Ford Escort Master Cylinder Pressure Sensor Circuit Open
U11D7 Alta 1.5-litre Air Bag Passenger Inflator Circuit Resistance Low on Squib
U11D7 Fiat 525 Lamp Brake Warning Output Circuit Open