DTC P0720:00 [FS5A-El]: Notes

WARNING: This page is about a different car, the 2009 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.

DETECTION CONDITION AND POSSIBLE CAUSE

DTC P0720:00	VSS circuit malfunction
DETECTION CONDITION	The TCM detects no signal from the VSS when the following conditions are met. Engine coolant temperature: more than 60°C {140°F} D or M range Intermediate speed: more than 1,500 rpm Diagnostic support note The MIL illuminates if the TCM detects the above malfunction condition during the first drive cycle. The AT warning light illuminates if the TCM detects the above malfunction condition during the first drive cycle. PENDING CODE is available. FREEZE FRAME DATA is available. The DTC is stored in the TCM memory.
POSSIBLE CAUSE	VSS connector or terminal malfunction Open circuit in wiring harness between VSS terminal A and AT main relay terminal C Short to GND in wiring harness between VSS terminal A and AT main relay terminal C Short to GND in wiring harness between VSS terminal B and TCM terminal 2P Short to power supply in wiring harness between VSS terminal B and TCM terminal 2P Open circuit in wiring harness between VSS terminal C and body GND VSS malfunction TCM connector or terminal malfunction Open circuit in wiring harness between VSS terminal B and TCM terminal 2P TCM malfunction
Courtesy of MAZDA MOTORS CORP.

DTC P0720:00

VSS circuit malfunction

DETECTION CONDITION

The TCM detects no signal from the VSS when the following conditions are met.
- Engine coolant temperature: more than 60°C {140°F}
- D or M range
- Intermediate speed: more than 1,500 rpm

Diagnostic support note

The MIL illuminates if the TCM detects the above malfunction condition during the first drive cycle.
The AT warning light illuminates if the TCM detects the above malfunction condition during the first drive cycle.
PENDING CODE is available.
FREEZE FRAME DATA is available.
The DTC is stored in the TCM memory.

POSSIBLE CAUSE

VSS connector or terminal malfunction
Open circuit in wiring harness between VSS terminal A and AT main relay terminal C
Short to GND in wiring harness between VSS terminal A and AT main relay terminal C
Short to GND in wiring harness between VSS terminal B and TCM terminal 2P
Short to power supply in wiring harness between VSS terminal B and TCM terminal 2P
Open circuit in wiring harness between VSS terminal C and body GND
VSS malfunction
TCM connector or terminal malfunction
Open circuit in wiring harness between VSS terminal B and TCM terminal 2P
TCM malfunction

Courtesy of MAZDA MOTORS CORP.