C1094 Diagnostic Trouble Code

C1094 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 C1094 diagnostic trouble code may include:

Poor fuel economy
Possible spark knock (detonation / pre-ignition)
Misfire
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.
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. Use the DVOM to test resistance and continuity on all system circuits if actuator and sensor resistance levels are in compliance with manufacturer's specifications.

Process Tips

Diagnostic trouble code C1094 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 C1094.

Fortunately, C1094 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

C1094 Trouble Code For Specific Cars

C1094 Bmw 750 Climate Control A/C Pressure Switch Circuit Short To Battery
C1094 Daewoo No 1
C1094 Nissan Exa Clutch Pedal Switch B Circuit Low
C1094 Toyota 2000 Neutral Switch Circuit Malfunction
C1094 Mitsubishi Pistachio Aux Heater Coolant Sensor Circuit Open
C1094 Suzuki Maruti Mirror Driver Horizontal Switch Circuit Failure
C1094 Lada 2110 Shift Solenoid A Malfunction