P1AE4 Diagnostic Trouble Code

P1AE4 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 P1AE4 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 :

With the valve disconnected, the red voltmeter lead should be attached to the IMRC valve power wire and the black voltmeter lead connected to ground. Once located, visually inspect the connectors and wiring. Look for rubbing, scraping, bare wires, worn spots or melted plastic connectors.

Process Tips

Diagnostic trouble code P1AE4 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 P1AE4.

Fortunately, P1AE4 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P1AE4 Trouble Code For Specific Cars

P1AE4 Toyota Avalon NVM TIC Failure
P1AE4 Chevrolet Zafira Engine Coolant Temperature Circuit Range/Performance Problem
P1AE4 Abarth 700 A Camshaft Position - Timing Over-Advanced or System Performance (Bank 2)
P1AE4 Ogle Mini Cylinder 3 Injector Circuit Low
P1AE4 Auto-union 1000 Aux Heater Fuel Pump Circuit Open
P1AE4 Mercedes B 150 ABS Hydraulic Pressure Differential Switch Input Circuit Failure
P1AE4 Citroen 11 Fan Relay (High) Circuit Malfunction