Your Volkswagen 1303 engine control system detects a problem, the computer stores the diagnostic trouble
code B0666 in its memory.
To figure out what is wrong with your vehicle you must first extract the B0666 DTC For Volkswagen 1303.
A good ground connection is also extremely important. B0666 Volkswagen 1303 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).
B0666 Volkswagen 1303 DTC Meaning
Body Code - Problem is antilock brake system, electronic suspension and steering systems.
SAE - Generic
Vehicle Speed Control And Idle Control System
Vehicle Speed Output Circuit
Transmission Control Module Reprogrammable Memory
If your vehicle failed a B0666 Volkswagen 1303 test and the B0666 Check Engine Light is NOT on, chances are you have a problem with the OBDII system, a burned out MIL lamp, or a faulty catalytic converter. The converter is essentially an afterburner that cleans up the exhaust after it exits the engine. The OBDII system uses B0666 a ownstream oxygen sensor to monitor the efficiency of the converter, and it should detect a drop in converter efficiency if the converter has been contaminated or is failing (ignition misfiring, leaky exhaust valves, and oil burning can all damage the converter). What you want to look B0666 DTC For Volkswagen 1303: Any conditions that might cause ignition misfire, an overly rich or lean fuel condition, or loss of compression.