What does code P1498 mean?

Q: What does code P1498 mean?

High speed Rad Fan Ground CTRL Rly Circuit. P1498 on GM vehicles indicates that the powertrain control module has detected a fault in the ground control circuit for the high-speed radiator cooling fan relay. The computer monitors the relay's ground path and sets this code when the circuit voltage or current falls outside the expected range, typically because the relay coil ground is open, shorted, or the relay itself has failed.

DTC codes / GM codes / P1498

P1498 · GMHigh speed Rad Fan Ground CTRL Rly Circuit

P1498 on GM vehicles indicates that the powertrain control module has detected a fault in the ground control circuit for the high-speed radiator cooling fan relay. The computer monitors the relay's ground path and sets this code when the circuit voltage or current falls outside the expected range, typically because the relay coil ground is open, shorted, or the relay itself has failed.

SystemPowertrain

Code typeGM specific

SeverityMedium

Fix difficultyIntermediate

AreaAuxiliary emission controls

Guidance is general and written for GM vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.