DTC P0193-00: High Fuel Pressure Sensor Circuit High Input: Notes

DTC P0193:00 DETECTION CONDITION AND POSSIBLE CAUSE

DTC P0193:00	High fuel pressure sensor circuit high input
DETECTION CONDITION	If the input voltage at the PCM terminal 1BO is more than 4.86 V for 5 s, the PCM determines that the high fuel pressure sensor circuit is high. Diagnostic support note This is a continuous monitor (CCM). The check engine light illuminates if the PCM detects the above malfunction condition during the first drive cycle. FREEZE FRAME DATA/Snapshot data is available. DTC is stored in the PCM memory.
FAIL-SAFE FUNCTION	Stops high pressure fuel pump control Limits intake air amount
POSSIBLE CAUSE	High fuel pressure sensor connector or terminals malfunction PCM connector or terminals malfunction High fuel pressure sensor malfunction Short to power supply in wiring harness between high fuel pressure sensor terminal C and PCM terminal 1BO Open circuit in wiring harness between the following terminals: High fuel pressure sensor terminal E-PCM terminal 1CI High fuel pressure sensor terminal C-PCM terminal 1BO High fuel pressure sensor terminal A-PCM terminal 1CN PCM malfunction
Courtesy of MAZDA MOTORS CORP.

CAUTION:

• Verify the malfunction symptom according to not only the PID value but also the symptom troubleshooting.