C1466 Diagnostic Trouble Code

C1466 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 C1466 diagnostic trouble code may include:

Reduction in engine performance, especially at low RPM levels
Vacuum leak on the engine
Diminished fuel efficiency
Engine surge

Possible Causes :

Rusty exhaust systems, cracked exhaust manifolds or damaged or missing gaskets or donuts will cause air leaks.
An air leak forward of the DPF will change the sensor readings resulting in the code
Dirty air cleaner element Damaged DPF

Repair Processes :

Replace the oxygen sensor that is downstream from the catalytic converter on the side of the engine that does not contain cylinder #1. Also, if a oxygen sensor code stating "heater circuit malfunction" the sensor has most probably failed. You might continue by connecting the scanner to the vehicle diagnostic connector and retrieving all stored codes and freeze frame data. Look for damage to the tank indicating impact that may have damaged the fuel pump or sender.

Process Tips

Diagnostic trouble code C1466 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 C1466.

Fortunately, C1466 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

C1466 Trouble Code For Specific Cars

C1466 Renault Ellypse Gear shift position Fault
C1466 Hyundai Stellar
C1466 Lancia K Speed Wheel Sensor RF Input Short Circuit To Ground
C1466 Fiat 500 Lamp Air Bag Warning Indicator Circuit Open
C1466 Volvo P210
C1466 Volvo V90 SCP (J1850) Invalid or Missing Data for External Lamps
C1466 Plymouth Cuda Evaporative Emission Control System Pressure Sensor Malfunction