C0370 Diagnostic Trouble Code

C0370 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 C0370 diagnostic trouble code may include:

Poor fuel economy
Possible spark knock (detonation / pre-ignition)
Misfire
Rich or lean exhaust

Possible Causes :

The Mass Airflow sensor will also cause this problem. Mass Airflow circuit malfunction.
Fuel with a large percentage of sulfur will clog the DPF quickly
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 damage to the tank indicating impact that may have damaged the fuel pump or sender. 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. Check to make sure they are not burnt or corroded. If in doubt, get some Electrical Contact cleaner at any parts store if cleaning of the terminals is needed.

Process Tips

Diagnostic trouble code C0370 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 C0370.

Fortunately, C0370 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

C0370 Trouble Code For Specific Cars

C0370 Mohs Ostentatienne Battery Heater Circuit Failure
C0370 Renault Etoile Gear Shift Reverse Actuator Circuit Range/Performance
C0370 Rambler American Fuel Temperature Sensor B Circuit Range/Performance
C0370 Hupmobile 621 Rotor Control Fault
C0370 Subaru Forester 3 Left Lamp Outage Signal Circuit Short to Ground
C0370 Daihatsu Sportrak Glow Plug Monitor Fault (Bank #2)
C0370 Plymouth Pronto Evaporative Emission Control System Vent Control Circuit Shorted