B0911 Diagnostic Trouble Code

B0911 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 B0911 diagnostic trouble code may include:

Engine surge
Blown fuse (if applicable)
Lack of power
Hesitation upon acceleration

Possible Causes :

Some aftermarket accessories and performance modifications
A faulty oxygen sensor. This will set a code in itself, however, a faulty oxygen sensor does not automatically condemn the sensor. The code just means that the sensor signal was not within specifications. An air leak or any of the above will cause an erroneous signal. There is a multitude of O2 codes relating to O2 performance which gives a clue to the problematic area.
Rarely - faulty Powertrain Control Module (PCM-programming required after replacement)

Repair Processes :

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. If the scan tool has that capability, and the scan tool can operate the IMRC valves, then the problem is either resolved and a simple code clearing is all that's left or a new PCM would be called for.

Process Tips

Diagnostic trouble code B0911 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 B0911.

Fortunately, B0911 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

B0911 Trouble Code For Specific Cars

B0911 Dodge Stealth Ignition Start Circuit Short To Battery
B0911 Ferrari 599 Intake Valve Control Solenoid Circuit (Bank 2)
B0911 Holden Rc Colorado Power To A/C Clutch Circuit Overcurrent
B0911 Rover 3.5-litre Ignition Coil - Cylinder 6 - Early Activation Fault
B0911 Abarth Ot 1000 A/C Evaporator Air Temperature Circuit Range/Performance
B0911 Isotta-fraschini 100 Hp SCP (J1850) Invalid or Missing Data for Restraints
B0911 Zaz Slavuta