C1400 Diagnostic Trouble Code

C1400 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 C1400 diagnostic trouble code may include:

Vacuum leak on the engine
Reduction in engine performance, especially at low RPM levels
Engine surge
Diminished fuel efficiency

Possible Causes :

Faulty IMRC actuator/sensor
A large vacuum leak would cause a massive amount of un-metered air to enter the intake manifold resulting in an overly lean mixture.
Rarely - faulty Powertrain Control Module (PCM-programming required after replacement)

Repair Processes :

If you find a related TSB, the information will often help in diagnosing the code in question as TSBs are crested from many thousands of repairs. Look for damage to the tank indicating impact that may have damaged the fuel pump or sender.

Process Tips

Diagnostic trouble code C1400 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 C1400.

Fortunately, C1400 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

C1400 Trouble Code For Specific Cars

C1400 Proton Savvy Fuel Tank Pressure Sensor Circuit Open
C1400 Austin Princess Aux A/C Blower Speed 2 Circuit Failure
C1400 Nissan Wingroad Cylinder #6 High To Low Side Short
C1400 Sunbeam-talbot 90 Mass or Volume Air flow Circuit Range/Performance Problem
C1400 Peugeot 806 Electric Current Circuit Malfunction
C1400 Toyota Venture Passenger Rear Door Ajar Circuit Open
C1400 Moretti 1200 Battery Saver Relay Coil Circuit Short To Battery