C0710

C0710 indicates a steering wheel angle sensor (SAS) performance problem — the EBCM/stability control module is seeing steering input data that does not correlate with vehicle yaw, lateral acceleration, or wheel-speed differential the way it should. The sensor itself is rarely the part that fails; what usually fails is the calibration, which is lost any time the battery is disconnected on some platforms, any time the steering column is serviced, and routinely after wheel alignments, tie-rod replacements, or wheel-bearing/hub service. Cheapest first: with a bidirectional scan tool capable of SAS relearn (most $200+ scan tools do this), perform the steering angle reset procedure — usually involves centering the wheel, key-on-engine-off, scan-tool command, then a brief drive cycle with a few left and right turns past 15 degrees. On many GMs and Toyotas this $0 procedure clears C0710 permanently. If relearn fails, watch live data: SAS should read 0 degrees with wheels perfectly straight, and should change smoothly with no skips or step-jumps as you turn lock-to-lock. The expensive misdiagnosis is replacing the SAS clockspring assembly at $400-$800 when a 5-minute relearn was all it needed — particularly common after independent shops do alignments without the SAS reset step in their workflow.

Vehicle-specific patterns: 2005-2013 Toyota/Lexus (Camry, Avalon, RAV4, ES350, RX350) — SAS relearn required after every alignment; Toyota TSB BR009-08 documents the zero-point calibration procedure. 2007-2014 Cadillac CTS/STS — clockspring internal ribbon cable fails, sets C0710 with airbag light. 2010-2015 Chevy Equinox/GMC Terrain — SAS calibration lost after battery disconnect, scan-tool relearn fixes. 2008-2013 Honda Accord/Pilot — VSA SAS neutral position memorization required after any front-end service. Estimated repair: $0 to $850.