Error code

OBD2 P0192

OBD2P0192
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.

What it means

Fuel Rail Pressure Sensor Circuit Low.

Severity

moderateThe vehicle can be driven, but performance will likely suffer.

Summary

P0192 indicates that the fuel rail pressure sensor is providing a low input signal to the ECM, which can affect engine performance and efficiency. This issue typically occurs in vehicles with high-pressure direct injection systems.

Symptoms

  • Engine may not start or run poorly
  • Decreased power and fuel economy

Common Causes

  • Fuel rail pressure sensor failure due to heat and vibration
  • Wiring issues such as shorts to ground or poor connections

Diagnosis

  1. Check for obvious damage in the wiring harness and connectors
  2. Perform continuity checks to identify short circuits or high resistances
  3. Backprobe the sensor and check voltage against repair manual specifications

Fixes

  • Replace faulty fuel rail pressure sensor if diagnosed as defective

FAQ

Can I drive with P0192?

Yes, but expect reduced performance and fuel efficiency.

What causes the low input signal in P0192?

Common causes include a faulty sensor or wiring issues leading to poor electrical connections.

View source

Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.

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