Mazda MAZDA3 2012–2016 — technical service bulletin
Bulletin SA288 · NHTSA communication 10093366 · issued May 2, 2016
Technical service bulletin
communication type
Electrical System
component
2012–2016
model years
8
vehicle entries
Official summary
If you encounter a vehicle with dtc p0137 (circuit low input), check the rear harness at the red circled area in the following diagram. If an aftermarket alarm system is installed, the rear harness might have received damage from electro-tap connectors (a) or to the protector tube (b). This damage is not covered under warranty.
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.