What does this code mean?
The wording below belongs to the named make and communication. Match the complete code, reporting module, model year and engine before applying it.
A code identifies a detected condition, not a part that must automatically be replaced.
Manufacturer wording
Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.
P0123THROTTLE POSITION SENSOR NO.1 CIRCUIT HIGH INPUT•DTCP0123THROTTLE POSITION SENSOR NO.1 CIRCUIT HIGH INPUT • DTCManufacturer communications
6Original wording in English
MAZDA
Reported code forms P0123
SOME VEHICLES MAY EXPERIENCE A MIL ILLUMINATION WITH DTC P2135 STORED IN MEMORY OR DTCS P0123 AND/OR P0222 AFTER THE THROTTLE BODY HAS BEEN REPLACED.•DTC P2135: THROTTLE POSITION SENSOR NO.1 / NO. 2 VOLTAGE…
MAZDA
Reported code forms P0123
SOME VEHICLES MAY EXPERIENCE A MIL ILLUMINATION WITH DTCS P0123 AND/OR P0222 STORED IN MEMORY.•DTC P0123: THROTTLE POSITION SENSOR NO.1 CIRCUIT HIGH INPUT•DTC P0222: THROTTLE POSITION SENSOR NO.2 CIRCUIT LOW INPUTDTCS…
MAZDA
Reported code forms P0123
MAZDA: DUE TO AN ABNORMAL ELECTRICAL NOISE, WITHIN THE ENGINE HARNESS, CERTAIN VEHICLES EXPERIENCE MIL ILLUMINATION WITH DTCS P0123 AND/OR P0222, WHICH CAN BE CORRECTED BY HAVING THROTTLE BODY HARNESS INSTALLED. *PE
MAZDA
Reported code forms P0123
SOME VEHICLES MAY EXPERIENCE A MIL ILLUMINATION WITH DTC P2135 STORED IN MEMORY OR DTCS P0123 AND/OR P0222 STORED AFTER THE THROTTLE BODY HAS BEEN REPLACED. • DTC P2135: THROTTLE POSITION SENSOR NO.1 / NO. 2 VOLTAGE…
MAZDA
Reported code forms P0123
SOME VEHICLES MAY EXPERIENCE A MIL ILLUMINATION WITH DTCS P0123 AND/OR P0222 STORED IN MEMORY.•DTC P0123: THROTTLE POSITION SENSOR NO.1 CIRCUIT HIGH INPUT•DTC P0222: THROTTLE POSITION SENSOR NO.2 CIRCUIT LOW INPUTDTCS…
MAZDA
Reported code forms P0123
MAZDA: MIL ON WITH DTC'S P0123 AND / OR P0222. THIS COULD HAPPEN DUE TO ABNORMAL ELECTRICAL NOISE WITHIN THE ENGINE HARNESS. *KB
Check vehicle applicability
5A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
Before replacing a part
Record codes and freeze-frame data. Check battery condition, related codes and visible wiring or hose damage. Follow the vehicle's diagnostic procedure and test results before replacing parts.
Can I keep driving?
A code alone cannot establish whether driving is safe. A flashing malfunction light, severe shaking, overheating, oil-pressure warning or loss of braking or steering needs prompt attention. Stop in a safe place and seek assistance when control or engine safety is affected. Follow the vehicle handbook.