P1A6E Diagnostic Trouble Code

P1A6E 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 P1A6E diagnostic trouble code may include:

Possible spark knock (detonation / pre-ignition)
Poor fuel economy
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
The light may stay on or light intermittently as the DPF regenerates. The engine will be sluggish on acceleration.

Possible Causes :

An air leak forward of the DPF will change the sensor readings resulting in the code
Rusty exhaust systems, cracked exhaust manifolds or damaged or missing gaskets or donuts will cause air leaks.
Defective ECU strategies or components will prevent proper regeneration

Repair Processes :

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. Find out what kind of system you have and verify that voltage to the fuel level sensor is present at the fuel pump wiring harness.

Process Tips

Diagnostic trouble code P1A6E 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 P1A6E.

Fortunately, P1A6E is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P1A6E Trouble Code For Specific Cars

P1A6E Toyota F-1 O2 Sensor Signals Swapped Bank 1 Sensor 1/ Bank 2 Sensor 1
P1A6E Fiat X1 Left Rear Backup Lamp Circuit Failure
P1A6E Nissan Vanette Cylinder #4 High To Low Side Short
P1A6E Alvis 4.3 Litre Air Bag Safing Sensor Output Circuit Short To Battery
P1A6E Volvo Xc60 SCP (J1850) Invalid or Missing Data for Fuel System
P1A6E Volkswagen 181 Rear Echo Sensor Circuit Failure
P1A6E Daimler Dk Headlamp Relay Circuit Failure