Your Proton 300 engine control system detects a problem, the computer stores the diagnostic trouble
code B0426 in its memory.
To figure out what is wrong with your vehicle you must first extract the B0426 DTC For Proton 300.
A good ground connection is also extremely important. B0426 Proton 300 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).
B0426 Proton 300 DTC Meaning
Body Code - Problem is antilock brake system, electronic suspension and steering systems.
SAE - Generic
Fuel And Air Metering (Injector Circuit Malfunctions Only)
Cruise Control Servo Indicates Low
Transmission Control Module Reprogrammable Memory
If your B0426 Proton 300 check engine light is illuminated, it's best to take it in for diagnostic testing, which can feel like a hassle. Because while the lights vary in appearance from vehicle to vehicle, all have the same basic meaning: There's a problem with the car's emissions system. The on-board diagnostics system B0426 and engine control unit are in charge of monitoring a bunch of different B0426 DTC For Proton 300, and if they get a reading that's a little out of whack, up pops the check engine light.