111 31

UnclassifiedCooling

What This Code Means

Engine coolant - Level low

Possible Causes

•Coolant level sensor - Supply voltage out of range
•Coolant level sensor - Value out of range

Suggested Actions

1Inspect the circuit to ground or open circuit

Related Rehlko Fault Codes

157 0 157 3 111 17 157 4 111 11 157 15 111 1 157 31 171 3 171 4 171 5 171 31

Browse all Rehlko fault codes

ASK RUDY ABOUT THIS FAULT

Get a diagnosis walkthrough for 111 31 on your specific Rehlko unit — cited to the OEM manual, not a forum guess.