C140E Diagnostic Trouble Code

C140E 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 C140E diagnostic trouble code may include:

Poor fuel economy
Possible spark knock (detonation / pre-ignition)
Misfire
Hesitation upon acceleration

Possible Causes :

A plugged converter will cause of host of driveability problems as well as set this code. A severely plugged converter will result in the inability to increase rpm when under load. Look for a code such as P0421 -- catalytic converter efficiency below threshold if the converter indicating a faulty converter.
Dirty air cleaner element Damaged DPF
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 :

If the scan tool has that capability, and the scan tool can operate the IMRC valves, then the problem is either resolved and a simple code clearing is all that's left or a new PCM would be called for. Oxygen sensors signal the engine management computer the amount of oxygen present in the exhaust, which is used in determining and controlling the fuel ratio. Look for damage to the tank indicating impact that may have damaged the fuel pump or sender.

Process Tips

Diagnostic trouble code C140E 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 C140E.

Fortunately, C140E is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

C140E Trouble Code For Specific Cars

C140E Volkswagen Voyage
C140E Vauxhall Agila Power Window RR Motor Circuit Failure
C140E Pininfarina Enjoy Engine Speed input Circuit Malfunction
C140E Smart Coupe Lamp ABS Warning Output Circuit Short To Ground
C140E Abarth 2200 4X4 Initialization Failure
C140E Honda Edix Pressure Transducer Main / Primary signal Faulted
C140E Bmw 116 Calibration Memory Fault