B1306 Diagnostic Trouble Code

B1306 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 B1306 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
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.
An air leak forward of the DPF will change the sensor readings resulting in the code

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. It should be pretty close to battery voltage (12 volts). If not, then this is the circuit that has the problem.

Process Tips

Diagnostic trouble code B1306 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 B1306.

Fortunately, B1306 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

B1306 Trouble Code For Specific Cars

B1306 Gaz Tschaika O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 2)
B1306 Bmw R 1200 Gs Clutch position ckt short to battery
B1306 Mercury Roadster Air Suspension Rear Pneumatic Failure
B1306 Zaz Jalta SCP (J1850) Invalid or Missing Data for Vehicle Speed Control
B1306 Humber Hawk Right Rear Center Sensor Circuit Short to Vbat
B1306 Mercedes Sl 350 Air Bag Crash Sensor #2 Feed/Return Circuit Failure
B1306 Mazda Roadster 4x4 Low Switch Error