garajizOBD-II code · manufacturer-specific
P1603
Throttle Control Unit Detected Loss of Return Spring
- System
- P1 — Powertrain (manufacturer-specific)
- Severity
- High (4/5)
- Can I keep driving?
- Drive with caution
What does P1603 mean?
P1603 is defined as “Throttle Control Unit Detected Loss of Return Spring”.
Drive gently and only as far as you need to; have it checked as soon as possible.
Manufacturer-specific meanings
The same code can mean something different on some makes.
- Kia: CAN Communication Bus Error
- BMW: Control Module Self Test Torque Monitoring
- Citroen, Diğer, Jaguar, Peugeot: EEPROM Malfunction
- Mazda: Immobilizer System Fault
- Volkswagen: Internal Control Module Self Check
- Buick, Cadillac, Chevrolet, GM, GMC, Oldsmobile, Saturn: Loss Of SDM Serial Data
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This page is general information; an exact diagnosis needs measurements and a technician’s check.