Error codes › Generator › Cummins-Onan QG i › 54 (QG i DF)

Cummins-Onan QG i error code 54 (QG i DF)

FaultGeneratorVerified against the manufacturer's manual

MAT Sender. Indicates that there is an open or short circuit in the MAT sender. Service: intake air temperature signal greater than 4.85 V or less than 0.05 V, or pressure signal more than 4.8V or lower than 0.2V - both live in the three-in-one sensor on the throttle body. Check resistance between the temperature pin and ground pin, the wire to the ECU, bent ECU pins. QG i DF dual-fuel family (QG 7000i DF = HGLCA, QG 4000i DF = HGLDA, QG 2800i DF = HGLEA) code table - distinct from the QG 2800i/2500i (HGLAA) table and from the HGJAA (0983-0501) and KY tables. The status indicator flashes a 1-digit code, or two sets of flashes (tens, pause, units) for a 2-digit code; flashing stops after 5 minutes and pressing STOP/PRIME 3 times within 5 seconds resumes it. The last fault logged keeps flashing after the condition is corrected.

What to check, and in what order, is in the app. A step-by-step flow walks this code with the pass/fail measurements, wiring schematics and procedures that go with it, and it works offline in the bay.

Start free trial 14 days free, no card needed

Documented in

Related codes

All Generator error codes · Look up another code