C1719 Diagnostic Trouble Code

C1719 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 C1719 diagnostic trouble code may include:

Faulty PCM
The light may stay on or light intermittently as the DPF regenerates. The engine will be sluggish on acceleration.
Poor acceleration
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.
A large air leak at or near the number one oxygen sensor would also cause a lean mixture.

Repair Processes :

Once located, visually inspect the connectors and wiring. Look for rubbing, scraping, bare wires, worn spots or melted plastic connectors. 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. Find out what kind of system you have and verify that voltage to the fuel level sensor is present at the fuel pump wiring harness.

Process Tips

Diagnostic trouble code C1719 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 C1719.

Fortunately, C1719 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

C1719 Trouble Code For Specific Cars

C1719 Mitsubishi Pajero Iv Aux Heater Coolant Pump Circuit Short to Ground
C1719 Mazda B2500 Transmission Transfer Case Counter Clockwise Shift Relay Coil Short Circuit To Ground
C1719 Suzuki Hayabusa Metering Oil Pump Temperature Sensor Circuit Malfunction
C1719 Plymouth Duster Evaporative Emission Control System Pressure Sensor Range/Performance
C1719 Opel Frogster Dim Panel Decrease Input Circuit Short To Battery
C1719 Toyota Bb O2 Sensor Circuit High Voltage (Bank 2 Sensor 3)
C1719 Daimler 24 Hazard Flash Output Circuit Failure