P1188
System
Powertrain (Fuel/Air)
Scanner som krävs
Enhanced OBD2 scanner (live data graphs, freeze frame, battery voltage test)

Fuel Delivery Error (GM)

Understand P1188, common causes, and the right FOXWELL scanner to diagnose it.

GM fuel delivery system not meeting commanded fuel mass — pump, injector, or pressure issue.

Vanliga symptom

  • Loss of power
  • Misfire under load
  • Long crank

Typiska orsaker

  • Weak fuel pump
  • Clogged filter
  • Injector flow imbalance
  • Fuel pressure regulator fault

Vilken scanner behöver du?

Enhanced OBD2 scanner (live data graphs, freeze frame, battery voltage test)

Använd live-data och freeze frame innan du byter delar. ABS-, SRS- och U-koder kräver oftast en fullsystems-scanner.

Diagnostiktips

  • Spara freeze frame när koden först sätts
  • Rensa koden först efter att orsaken är åtgärdad
  • Kontrollera relaterade väntande koder
  • Verifiera batterispänning över 12,4 V innan du misstänker sensorer

Rekommenderade FOXWELL-scannrar

Vanliga frågor

Can I diagnose P1188 with a basic code reader?
P1188 may set in the engine module, but related diagnostics often benefit from an enhanced or full-system scanner with live data and freeze frame.
Is it safe to drive with P1188?
It depends on the code and symptoms. Flashing check engine lights and misfire codes should be addressed immediately. Consult a professional if unsure.