P1CAE Diagnostic Trouble Code

P1CAE 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 P1CAE diagnostic trouble code may include:

If the DPF is not cleared the ECU will revert to the "Limp Home Mode" until the situation is corrected
Corroded or damaged connector
Reduction in engine performance, especially at low RPM levels
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 :

A large vacuum leak would cause a massive amount of un-metered air to enter the intake manifold resulting in an overly lean mixture.
Faulty IMRC actuator/sensor
Fuel with a large percentage of sulfur will clog the DPF quickly

Repair Processes :

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. Look for damage to the tank indicating impact that may have damaged the fuel pump or sender.

Process Tips

Diagnostic trouble code P1CAE 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 P1CAE.

Fortunately, P1CAE is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P1CAE Trouble Code For Specific Cars

P1CAE Reliant Kitten Gate Select Actuator Circuit High
P1CAE Honda Pilot Rear Cargo Door Unlock Circuit Open
P1CAE Peugeot 308 Ii EGR Drive Overcurrent
P1CAE Jaguar 220 Seat Driver Backward Circuit Open
P1CAE Mercury Mariner I Air Suspension LR Vent Request Exceeded Max Timing
P1CAE Bmw 530 Chime OUTPUT Request Ckt Short to Ground
P1CAE Peugeot Sesame Engine Oil Pressure Sensor/Switch High Voltage