C1869 Diagnostic Trouble Code

C1869 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 C1869 diagnostic trouble code may include:

Fuel pressure too low
Rich or lean exhaust
Diminished fuel efficiency
The light may stay on or light intermittently as the DPF regenerates. The engine will be sluggish on acceleration.

Possible Causes :

An air leak forward of the DPF will change the sensor readings resulting in the code
Rusty exhaust systems, cracked exhaust manifolds or damaged or missing gaskets or donuts will cause air leaks.
Faulty IMRC actuator/sensor

Repair Processes :

You might continue by connecting the scanner to the vehicle diagnostic connector and retrieving all stored codes and freeze frame data. Look for missing ground strap or a rusty ground where the fuel tank is grounded to the frame. Check for damage to the wiring harness connector. Look at the plug wires to make sure they are not burnt or laying on the exhaust.

Process Tips

Diagnostic trouble code C1869 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 C1869.

Fortunately, C1869 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

C1869 Trouble Code For Specific Cars

C1869 Honda Civic Type-r Pressure Control Solenoid Failed Low
C1869 Saleen S Ignition/Distributor Engine Speed Input Circuit No Signal
C1869 Alpine A442 Air Bag Passenger Circuit Resistance Low or Shorted Together
C1869 Chrysler Dodge ETC In Power Limiting Mode
C1869 Smart Coupe Lamp ABS Warning Output Circuit Short To Ground
C1869 Skoda Octavia Knock Sensor 1 Circuit Malfunction (Bank 1 or Single Sensor)
C1869 Mazda Mx-5