P0123critical severityPowertrain
Throttle/Pedal Position Sensor/Switch A Circuit High Input
on 1998 Mazda B2500 2.5L I4 · FWD
What this code means
The TPS voltage is above the maximum threshold.
Symptoms
- Check Engine Light
- Limp mode
- High idle
- Sudden acceleration concern
Common causes
- Open circuit in TPS ground
- Short to voltage
- Faulty TPS
Diagnostic steps
- Test TPS voltage
- Check for open ground
- Check for shorts to power
Repair notes
Repair wiring or replace TPS. Safety concern - do not drive.
Other Powertrain codes on this vehicle
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P0002
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P0004
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P0010
Intake Camshaft Position Actuator Circuit/Open Bank 1
P0011
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P0012
Intake Camshaft Position Timing Over-Retarded Bank 1
P0013
Exhaust Camshaft Position Actuator Circuit/Open Bank 1
P0014
Exhaust Camshaft Position Timing Over-Advanced Bank 1
P0015
Exhaust Camshaft Position Timing Over-Retarded Bank 1