P1DAD Diagnostic Trouble Code

P1DAD 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 P1DAD diagnostic trouble code may include:

Rich or lean exhaust
Fuel pressure too low
Engine surge
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.
Faulty IMRC actuator relay (if equipped)

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 all testing has passed so far yet you still have the same code, check your scan tool and see if it can open and close the IMRC valve.

Process Tips

Diagnostic trouble code P1DAD 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 P1DAD.

Fortunately, P1DAD is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P1DAD Trouble Code For Specific Cars

P1DAD Chrysler Dual Cowl ETC Power Less Than Demand
P1DAD Ginetta G32 Optical Sensor System Failure
P1DAD Volkswagen Crafter Reverse Output Circuit
P1DAD Simca Vedette Marly Internal Control Module Keep Alive Memory (KAM) Error
P1DAD Audi A2 Ambient Air Temperature Sensor Circuit Low
P1DAD Mercedes-benz 560 Air Bag Tone Warning Indicator Circuit Failure
P1DAD Citroen C-zero Fuel Level Output Circuit Malfunction