P0703
Torque Converter/Brake Switch B Circuit Malfunction
DTC P0703, sometimes indicated as P070300 is an OBD diagnostic trouble code indicating a generic fault with the vehicle powertrain (i.e. engine and gearbox). This code identifies an error with the causing torque converter/brake switch b circuit malfunction.
The torque converter/brake switch B circuit malfunction is most commonly caused by a faulty brake switch or wiring issue. The switch may become corroded or dirty, which can cause it to malfunction. The wiring may also become damaged, which can cause a short or open in the circuit.
If the torque converter/brake switch B circuit is malfunctioning, the Check Engine Light will likely be on. The code may also be stored in the computer's memory.
To fix the problem, you will need to determine what is causing the malfunction and fix it. If it is a faulty brake switch, you will need to replace it. If it is a wiring issue, you will need to fix the wiring.
- P0703: Torque Converter/Brake Switch B Circuit Malfunction
- P0703: Brake Switch "B" Circuit
- P0703: Brake Switch B Circuit Malfunction
- P0703: Brake switch B – circuit malfunction
- P0703 00: Brake switch B - circuit malfunction
- P0703 00: Damage to the automatic gearbox control system - failure of the torque converter or switch
Bulletins are notices put out by manufacturers in conjunction with the NHTSA to notify the public of manufacturing issues or changes.
- No. 2005.2 - ENGINE AND ENGINE COOLING
PORSCHE: Instructions on advanced technical information for the 992 - engine warning fault caused by P070300 (00110d) ⿿ ⿿brake light switch-electrical fault - 0311075 - POWER TRAIN:AUTOMATIC TRANSMISSION
SUZUKI: Dtc P0703 explained. Automatic transmission dtc P0703 is present. All forenza models. Suzuki. *tt - 0211075 - POWER TRAIN:AUTOMATIC TRANSMISSION
SUZUKI: Automatic transmission diagnostic trouble code (dtc) P0703 is present. Dtc P0703 explained. *tt