P0694 Cooling Fan 2 Control Circuit High

P0694 indicates a high condition in the cooling fan 2 control circuit. Fan 2 control voltage or feedback is higher than expected.

Code status

Needs verification

Not yet verified against SAE J2012_202509 / J2012DA. Treat unverified rows as a lookup aid, not repair authority.

System: Computer
Scope: iso-sae-controlled-p0
Standard: SAE J2012 / ISO 15031-6
Source: legacy-import

Diagnostic boundary

A diagnostic trouble code reports that a monitored test failed. It does not prove one specific part is bad, and manufacturer logic can add vehicle-specific conditions.

Do not replace the PCM before checking fan 2 relay contacts, ground integrity, and harness backfeed.

Useful checks before replacing parts

Review fan 2 command, feedback voltage, relay state, coolant temperature, A/C request, charging voltage, freeze-frame data, and related fan codes.
Inspect for short-to-voltage faults, stuck relays, open grounds, melted fan connectors, damaged harness insulation, and backfeed through fan module circuits.
Verify whether fan 2 stays powered when not commanded and whether relay removal changes the high signal.

Related OBD-II codes

These nearby computer entries can help compare wording and fault area. They may share the same verification status as the source database.