P0703moderate severityPowertrain
Torque Converter/Brake Switch B Circuit
on 2017 Maserati Levante 3.0L V6 Twin Turbo · AWD
What this code means
The PCM detected a fault in the brake switch B circuit used for torque converter and cruise control functions. This may affect shift and lockup operation.
Symptoms
- Cruise control inoperative
- Erratic torque converter lockup
- Check engine light on
Common causes
- Faulty brake light switch
- Wiring fault in brake switch circuit
- Corroded connector
- Blown brake circuit fuse
Diagnostic steps
- Scan and confirm P0703 code
- Test brake switch operation
- Inspect brake switch wiring and connectors
- Check related fuses and grounds
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P0001
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P0002
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P0003
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P0004
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P0005
Fuel Shutoff Valve A Control Circuit/Open
P0006
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P0007
Fuel Shutoff Valve A Control Circuit High
P0008
Engine Position System Performance - Bank 1
P0009
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P0010
Intake Camshaft Position Actuator Circuit/Open Bank 1