C1701 Diagnostic Trouble Code

C1701 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 C1701 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 :

Low fuel pressure caused by a clogged filter, failing fuel pump, failed fuel pressure regulator or clogged or leaking injectors.
Low fuel pressure caused by a clogged filter, failing fuel pump, failed fuel pressure regulator or clogged or leaking injectors.
Defective ECU strategies or components will prevent proper regeneration

Repair Processes :

Look for damage to the tank indicating impact that may have damaged the fuel pump or sender. Pack the connector cavity with dielectric silicone compound (same stuff they use for light bulb sockets and spark plug wires) and reassemble.

Process Tips

Diagnostic trouble code C1701 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 C1701.

Fortunately, C1701 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

C1701 Trouble Code For Specific Cars

C1701 Dkw Sonderklasse Ignition Coil - Cylinder 2 - Early Activation Fault
C1701 Sunbeam 3-litres Manifold Absolute Pressure/Barometric Pressure Circuit Low Input
C1701 Ginetta G10 Oil Level Switch Circuit Failure
C1701 Sbarro Millenium Injection Pump Fuel Metering Control "A" Low (Cam/Rotor/Injector)
C1701 Ford M350 Mirror Driver Up/Down Motor Stalled
C1701 Syrena 100 Mirror Driver/Passenger Switch Circuit Open
C1701 Maserati Kyalami Transmission Fluid Pressure Sensor/Switch E Circuit Range/Performance