B16AA Diagnostic Trouble Code

B16AA 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 B16AA diagnostic trouble code may include:

Corroded or damaged connector
If the DPF is not cleared the ECU will revert to the "Limp Home Mode" until the situation is corrected
Lack of power
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.
Rough running engine due to misfiring plugs. Many engines have misfire codes to indicate the cylinder effected, such as P0307 for number 7.

Repair Processes :

It should be pretty close to battery voltage (12 volts). If not, then this is the circuit that has the problem. If the engine displays a miss and there wasn't a code, determine which cylinder is misfiring. If the exhaust manifold is visible, spay or pour a small amount of water on each cylinder exhaust port. Water will evaporate immediately on good cylinders and slowly on the missing cylinder. If this can't be accomplished pull the plugs and check the condition. 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 B16AA 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 B16AA.

Fortunately, B16AA is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

B16AA Trouble Code For Specific Cars

B16AA Sunbeam Alpine Manifold Absolute Pressure/Barometric Pressure Circuit Range/Performance Problem
B16AA Seat Alhambra Injector Circuit Malfunction - Cylinder 7
B16AA Maxwell Model A Transmission Range Sensor Circuit High Input
B16AA Lorraine 30 Hp Tire / Axle Ratio Out of Acceptable Range
B16AA Bmw 1800 Camshaft Position Sensor B Circuit Malfunction
B16AA Lancia Alpha Speed Wheel RF Input Signal Missing
B16AA Ford Xl Motor # 2 Input Circuit Short to Vbat