How much does it cost to fix boiler error code FLOW/RETURN SENSOR DRIFT ERROR?

Typical repair cost for the boiler FLOW/RETURN SENSOR DRIFT ERROR fault is £90-180 including labour.

FLOW/RETURN SENSOR DRIFT ERROR High

Boiler Fault Code FLOW/RETURN SENSOR DRIFT ERROR

Also written as FLOWRETURNSENSORDRIFTERROR — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code FLOW/RETURN SENSOR DRIFT ERROR appears across 1 boiler brand and 1 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler has detected that the temperature sensors are giving inconsistent readings, which usually happens because the water isn't flowing correctly or the system is low on pressure. (As reported on Johnson Starley J32 System ET)

Pick your boiler brand for the FLOW/RETURN SENSOR DRIFT ERROR fix

Johnson Starley FLOW/RETURN SENSOR DRIFT ERROR 1 model

Source

Information for the FLOW/RETURN SENSOR DRIFT ERROR fault code is sourced from the official service / installation manual for each model that displays it. Read more about how we source fault codes →

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026