B3434 Diagnostic Trouble Code

B3434 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 B3434 diagnostic trouble code may include:

Cherry red hot catalytic converter
Poor acceleration
The light may stay on or light intermittently as the DPF regenerates. The engine will be sluggish on acceleration.
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 at the plug wires to make sure they are not burnt or laying on the exhaust. 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. You might continue by connecting the scanner to the vehicle diagnostic connector and retrieving all stored codes and freeze frame data.

Process Tips

Diagnostic trouble code B3434 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 B3434.

Fortunately, B3434 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

B3434 Trouble Code For Specific Cars

B3434 Simca Tufao Intermediate Shaft Speed Sensor Circuit Intermittent
B3434 Lincoln Mkz Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
B3434 Daihatsu Fellow Gear Shift Position Circuit Range/Performance
B3434 Mitsubishi Endeavor Autolamp Delay Decrease Circuit Open
B3434 Peugeot 107 Dynamic Stability Control Right Front Valve Malfunction
B3434 Citroen Jumpy Iii Fuel Pump Control Out Of Range
B3434 Jaguar Xj-13 Seat Driver Front Up Switch Circuit Failure