C1919 Engine Trouble Code
What is C1919?
C1919 indicates potential catalytic converter failure. If completely failed, your vehicle may not run properly and fuel economy will suffer significantly. Average replacement cost is $2,000–$2,140. This repair requires professional service and should not be delayed.
Code Information
| Code Type: | OBD-II Chassis (C) Trouble Code |
| System: | Chassis |
| Code: | C1919 |
C1919 Symptoms
Check Engine Light
Illuminated dashboard warning
Engine Stalling
Engine stops unexpectedly or misfires
Performance Issues
Reduced power or acceleration
Starting Problems
Difficulty starting the engine
C1919 Code Structure
Understanding what each digit means in the C1919 chassis trouble code:
| C | 1 | 9 | 1 | 9 |
|---|---|---|---|---|
| Chassis Code | Fuel And Air Metering | Injector Circuit Malfunction - Cylinders | Engine Shutoff Solenoid Malfunction | Reverse Input Circuit |
How to Fix C1919
Diagnostic Steps:
The catalytic converter has oxygen sensors before and after it. When warm and in closed-loop mode, the upstream O2 sensor reading should fluctuate, while downstream should remain steady.
Repair Solution:
Firing order is engineered to minimise vibration. Altering firing order results in mistimed ignition and poor engine operation. Consult vehicle-specific repair manual for correct firing order.
Technical Notes:
C1919 on electronically controlled automatic transmissions relates to shift solenoid operation. The solenoid actuates hydraulic circuits controlling clutches or bands for gear changes.
C1919 Description
C1919 engine trouble code is related to Reverse Input Circuit.
Main Cause
The primary reason for C1919 OBD-II Engine Trouble Code is: Injector Circuit Malfunction - Cylinders.