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P2689
Fuel Supply Heater Control Circuit High
Generic · engine
Data confidence
78%
The control module detected that the signal in the Fuel Supply Heater Control circuit stayed above the expected operating range.
TuningBot DTC Database · v4.37.15
P2689 Fuel Supply Heater Control Circuit High
Generic (OBD-II) interpretation in the TuningBot DTC database.
What P2689 means
Related and nearby codes
How to read P2689
P
Powertrain: engine, transmission and driveline systems.
2
Generic SAE-standard code: same meaning on every make.
689
Specific fault index within the subsystem.
Frequently asked questions about P2689
What does P2689 mean?
Fuel Supply Heater Control Circuit High. The control module detected that the signal in the Fuel Supply Heater Control circuit stayed above the expected operating range.
Is P2689 generic or manufacturer-specific?
P2689 is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.
Can TuningBot remove P2689 at file level?
If the fault logic lives in the ECU calibration, yes: our DTC Removal file service disables the specific fault entry. Checksum correction is not included: it is a separate, optional service. Not sure whether your case qualifies? Request a free assessment and our engineers will check your ECU file.
Other file services
Understand the system behind this code: Diagnostic Strategy and DTC Logic