DTC P0193; Pcm Fuel Pressure Sensor Circuit High Input: Notes
DETECTION CONDITION & POSSIBLE CAUSE
| DTC P0193:00 |
Fuel pressure sensor circuit high input |
| DETECTION CONDITION |
- If the input voltage at the PCM terminal 1CA is more than 4.86 V for 5 s, the PCM determines that the 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 (Mode 2)/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 |
- Fuel pressure sensor connector or terminals malfunction
- PCM connector or terminals malfunction
- Fuel pressure sensor malfunction
- Short to power supply in wiring harness between fuel pressure sensor terminal B and PCM terminal 1CA
- Open circuit in wiring harness between the following terminals:
- Fuel pressure sensor terminal C-PCM terminal 1BJ
- Fuel pressure sensor terminal B-PCM terminal 1CA
- Fuel pressure sensor terminal A-PCM terminal 1CB
- PCM malfunction
|
|
|
CAUTION:
- Verify the malfunction symptom according to not only the PID value but also the symptom troubleshooting.
Related PIDs
| Item (definition) |
Unit/Condition |
Definition |
Condition/Specification (Reference) |
| FUEL_PRES |
KPa {MPA}, mBar {BAR}, psi, in H20 |
Fuel pressure |
|
| V |
Fuel pressure sensor voltage |
- Fuel pressure is 3.0 MPa {31 kgf/cm2
, 435 psi}: Approx. 0.92 V
- Fuel pressure is 4.8 MPa {49 kgf/cm2
, 696 psi}: Approx. 1.17 V
|