C1565 Diagnostic Trouble Code

C1565 is a kind of OBD-II Diagnostic C-Chassis 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 C1565 diagnostic trouble code may include:

Faulty or damaged wiring
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
Poor fuel economy
Diminished fuel efficiency

Possible Causes :

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.
Defective ECU strategies or components will prevent proper regeneration
A large vacuum leak would cause a massive amount of un-metered air to enter the intake manifold resulting in an overly lean mixture.

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. You might continue by connecting the scanner to the vehicle diagnostic connector and retrieving all stored codes and freeze frame data.

Process Tips

Diagnostic trouble code C1565 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 C1565.

Fortunately, C1565 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

C1565 Trouble Code For Specific Cars

C1565 Jaguar Xj-8 Seat Driver Occupied Input Circuit Failure
C1565 Mercury Monterey Air Suspension Rear Height Sensor Low Signal Circuit Short To Battery
C1565 Hispano Suiza Type 68 Pedal Demand Sensor B Circuit High Input
C1565 Ford Indigo Mirror Driver Right Circuit Failure
C1565 Audi 90 Ambient Air Temperature Sensor Circuit
C1565 Mini 1275 Anti-Theft Number of Programmed Keys Is Below Minimum
C1565 Geely Haoqing O2 Sensor Heater Circuit Malfunction (Bank 2 Sensor 3)