P1BA4 Diagnostic Trouble Code

P1BA4 is a kind of OBD-II Diagnostic P-Powertrain 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 P1BA4 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.
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 :

Defective ECU strategies or components will prevent proper regeneration
The Mass Airflow sensor is a hot wire that senses the volume of air entering the intake manifold. The computer uses this information to control fuel mixture.
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. Use the DVOM to test resistance and continuity on all system circuits if actuator and sensor resistance levels are in compliance with manufacturer's specifications. Look at the plug wires to make sure they are not burnt or laying on the exhaust.

Process Tips

Diagnostic trouble code P1BA4 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 P1BA4.

Fortunately, P1BA4 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P1BA4 Trouble Code For Specific Cars

P1BA4 Peugeot 4008 EGR No Flow Detected
P1BA4 Bristol 400 Cooling Fan 3 Control Circuit Malfunction
P1BA4 Ford Street Ka Mirror Passenger Up Circuit Short To Ground
P1BA4 Ogle Sx Cylinder 3 Misfire Detected
P1BA4 Nissan Hypermini Clutch Switch Circuit Malfunction
P1BA4 Darracq Type N Heated Windshield Input Short to Ground
P1BA4 Lancia Lambda Speed Wheel Sensor RR Input Circuit Failure