P0A59 Diagnostic Trouble Code

P0A59 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 P0A59 diagnostic trouble code may include:

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
Faulty or damaged wiring
Hesitation upon acceleration
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 :

Once located, visually inspect the connectors and wiring. Look for rubbing, scraping, bare wires, worn spots or melted plastic connectors. 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.

Process Tips

Diagnostic trouble code P0A59 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 P0A59.

Fortunately, P0A59 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P0A59 Trouble Code For Specific Cars

P0A59 Renault Etoile Gear Shift Reverse Actuator Circuit Range/Performance
P0A59 Mercedes Sl 320 Air Bag Crash Sensor #1 Ground Circuit Short To Ground
P0A59 Volkswagen Saveiro SAI System Incorrect Downstream Flow Detected
P0A59 Toyota Isis Oil Level Switch Circuit Short To Battery
P0A59 Rover 414 Ignition Coil B Primary Circuit Malfunction
P0A59 Mazda Mazda 3 Iii Turbo/Super Charger Bypass Valve Control Circuit Range/Performance
P0A59 Lincoln Continental Throttle Position Not Available