What does code P1198 mean?

Q: What does code P1198 mean?

Radiator Temperature Sensor Voltage Too High. P1198 on Chrysler vehicles means the powertrain control module (PCM) has detected a voltage signal from the radiator temperature sensor that is higher than the expected range, typically above 4.5 volts. The PCM uses this sensor to monitor radiator outlet temperature for cooling fan control and engine protection, and a high voltage usually indicates an open circuit or a sensor that has failed with excessive resistance.

DTC codes / Chrysler codes / P1198

P1198 · ChryslerRadiator Temperature Sensor Voltage Too High

P1198 on Chrysler vehicles means the powertrain control module (PCM) has detected a voltage signal from the radiator temperature sensor that is higher than the expected range, typically above 4.5 volts. The PCM uses this sensor to monitor radiator outlet temperature for cooling fan control and engine protection, and a high voltage usually indicates an open circuit or a sensor that has failed with excessive resistance.

SystemPowertrain

Code typeChrysler specific

SeverityMedium

Fix difficultyIntermediate

AreaFuel and air metering

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