Step by step how to fix p0703 code at home so i can smog my car. Please Help...
It seams that no one knows what this code po703 is it refers to brake switch circuit b which has nothing to do with the brake switch it is related to the switch in the transmission eather a wiring problem or a switch problem at the transmission
SOURCE: Ihave code p0703 brake switch,what can I do?
P0703 (M) Brake Switch Stuck Pressed or Released Incorrect input state
detected in the brake switch circuit (Changed from P1595).
The switch cost like 20 bucks. It is located on the brake pedal, it will
either be in front of or behind the pedal at the top. It will have a
plunger that contacts the pedal, and an electrical pig tail. usually you
just twist it and pull it out kinda like a headlamp.
Hope this help (remember rated and comment this).
SOURCE: need help on how to fix injector #1 control circuit
the injectors are controlled by the computer that gets signals from sensors. check sensors first, all of them on the engine and then, if no problem found, have your computer check by repair shop
SOURCE: What does P0703 brake switch circuit B mean?
sounds like you may have a bad brake light switch from the factory. Id take the one you put on and try swapping it with another one. if you have a scan tool, check and make sure the brake light switch (will probably read BOO on scan tool) reads "on" when you push it down and "off" when your foot is off of it. check voltage and ground at your connector to make sure you have a complete circuit. If it reads "on" when you disconnect the switch, replace the switch.
SOURCE: Check Engine light with code P0703
About $20 for a new brake light switch that can be installed in about 15 minutes or less usually, may be good insurance for a long distance drive. The code doesn't say it's a switch malfunction, the computer has seen a fault in the brake switch circuit and set the code-could just be a poor connection there.
More important, how do the brake lights work? I think I'd buy the switch or check the connector by the pedal at least. The computer may not let the cruise control work because of the code.
P0700 Transmission Control System
P0701 Transmission Control System Range/Performance
P0702 Transmission Control System -Electrical
P0703 Torque Converter/Brake Switch B Circuit
P0704 Clutch Pedal Position Switch -Circuit Malfunction
P0705 Transmission Range Sensor/Switch Circuit Malfunction (PRNDL Input)
P0706 Transmission Range Sensor/Switch Circuit Range/Performance
P0707 Transmission Range Sensor/Switch Circuit Low Input
P0708 Transmission Range Sensor/Switch Circuit High Input
P0709 Transmission Range Sensor/Switch Circuit intermittent
P0710 Transmission Fluid Temperature Sensor Circuit
P0711 Transmission Fluid Temperature Sensor Circuit Range/Performance
P0712 Transmission Fluid Temperature Sensor Circuit Low Input
P0713 Transmission Fluid Temperature Sensor Circuit High Input
P0714 Transmission Fluid Temperature Sensor Circuit Intermittent
P0715 Input/Turbine Speed Sensor Circuit
P0716 input/Turbine Speed Sensor Circuit Range/Performance
P0717 Input/Turbine Speed Sensor Circuit No Signal
P0718 Input/Turbine Speed Sensor Circuit Intermittent
P0719 Torque Converter/Brake Switch B Circuit Low
P0720 Output Shaft Speed Sensor Circuit
P0721 Output Shaft Speed Sensor Circuit Range/Performance
P0722 Output Shaft Speed Sensor Circuit No Signal
P0723 Output Shaft Speed Sensor Circuit Intermittent
P0724 Torque Converter/Brake Switch B Circuit High
P0725 Engine RPM Input Circuit
P0726 Engine RPM Input Circuit Range/Performance
P0727 Engine RPM Input Circuit No Signal
P0728 Engine RPM Input Circuit Intermittent
P0729 Gear 6 Incorrect Ratio
P0730 Incorrect Gear Ratio
P0731 Gear 1 Incorrect Ratio
P0732 Gear 2 Incorrect Ratio
P0733 Gear 3 Incorrect Ratio
P0734 Gear 4 Incorrect Ratio
P0735 Gear 5 Incorrect Ratio
P0736 Reverse Incorrect Ratio
P0737 TCM Engine Speed Output Circuit
P0738 TCM Engine Speed Output Circuit Low
P0739 TCM Engine Speed Output Circuit High
P0740 Torque Converter Clutch Solenoid Circuit
P0741 Torque Converter Clutch Solenoid Circuit Performance or Stuck Off
P0742 Torque Converter Clutch Solenoid Circuit Stuck On
P0743 Torque Converter Clutch Solenoid Circuit Electrical
Now i dont know a lot about automatics especially modern ones with all this fancy electronics thats used nowdays but i think its a fault with the temperature sensor for the gearbox.But where its located and what it looks like i have no idea it could even be mounted inside the gearbox .Sorry not a very good answer from a mechanic but?? very few of our europeon cars come with auto transmission .Evan when i do know whats wrong i cannot buy the parts for the gearbox as only re-con boxes supplied by the dealer so best advice is to try a specialist in auto box repairs only .PS some of my best students when i used to teach mechanics many moons ago were the girls so no excuses like iam only a girl please
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