Your Alfa Romeo 66 engine control system detects a problem, the computer stores the diagnostic trouble
code C3391 in its memory.
To figure out what is wrong with your vehicle you must first extract the C3391 DTC For Alfa Romeo 66.
A good ground connection is also extremely important. C3391 Alfa Romeo 66 engine problem because the presence of voltage at the panel harness won't make the panel work if there is a bad ground connection. Since the instrument cluster is mounted in a plastic dash, a separate ground wire or ground circuit through the wiring harness is usually needed to complete the power circuit. Refer again to the wiring diagram to find the ground path, and then check it with your ohmmeter. Do not use a self-powered test light because it cannot measure resistance (any resistance will lower circuit voltage).
C3391 Alfa Romeo 66 DTC Meaning
Chassis Code - Problem is controller area network wiring bus and modules.
SAE - Generic
IC Module 4X Ref Circuit Intermittent, No Pulses
TP Sensor Learn Not Complete
PCM Stack Overrun
OBD C3391 Alfa Romeo 66 code and tailpipe testing are two different approaches to identify vehicles in need of repair. The OBD system looks for broken or malfunctioning emissions control components and C3391, while tailpipe tests sample a vehicle's exhaust to see if it is above or below certain prescribed limits. Given the robust nature of today's emissions control components, it is entirely possible for an individual component to C3391 DTC For Alfa Romeo 66 malfunction without leading to an immediate increase in emissions at the tailpipe. In such cases, other components (like the catalyst) can temporarily compensate for the part that is broken however, these other components can only do double duty for so long before they, too, begin to malfunction. In addition, OBD also monitors for C3391 DTC For Alfa Romeo 66 and other malfunctions in the fuel system problems that traditional tailpipe tests were not designed to identify. Most state and local areas also include a gas cap pressure test as part of an emission inspection.