U2261 Diagnostic Trouble Code

U2261 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 U2261 diagnostic trouble code may include:

Vacuum leak on the engine
Reduction in engine performance, especially at low RPM levels
Engine surge
The engine oil will exhibit dilution from the ECUs attempts to increase engine temperature. Some vehicles advance the fuel injection timing slightly after top center to afterburn a small amount of fuel to increase exhaust temperatures. Some of this fuel enters the crankcase. When the ECU determines the necessity to regenerate the DPF, the service life of the oil be shortened significantly

Possible Causes :

A large vacuum leak would cause a massive amount of un-metered air to enter the intake manifold resulting in an overly lean mixture.
Faulty IMRC actuator/sensor
Rarely - faulty Powertrain Control Module (PCM-programming required after replacement)

Repair Processes :

Check to make sure they are not burnt or corroded. If in doubt, get some Electrical Contact cleaner at any parts store if cleaning of the terminals is needed. 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 U2261 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 U2261.

Fortunately, U2261 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

U2261 Trouble Code For Specific Cars

U2261 Ford Ranchero Mirror Passenger Left Circuit Failure
U2261 Toyota 1000 Multi-faults - Bank 2 - With Low Side Shorts
U2261 Wiesmann Gt SCP (J1850) Invalid or Missing Data for Network Control
U2261 Mitsubishi Outlander Aux Heater Blower Fan Circuit Open
U2261 Fiat Grand Break Lamp Tail Output Circuit Short To Battery
U2261 Volkswagen Microbus Right Rear Center Sensor Circuit Fault
U2261 Vaz 2120 PRNDL Input #3 Circuit Failure