What does code P1039 mean on Ford vehicles?
The PCM does not receive a valid vehicle speed signal, affecting speed calculation and dependent systems.
OBD-II Code Ford
P1039 — Ford — Vehicle Speed Signal Incorrect or Missing
The PCM does not receive a valid vehicle speed signal, affecting speed calculation and dependent systems.
Common symptoms
- Inoperative speedometer
- irregular shifting
- unstable ABS
Possible causes
- Faulty vehicle speed sensor
- damaged wiring
- loose connectors
Initial recommendation
Inspect vehicle speed sensor and wiring integrity.
Safety notice
This information is for guidance only. Brand-specific codes may vary by model, year, engine, transmission and vehicle configuration. It does not replace a physical inspection or diagnosis by a qualified mechanic. If the vehicle is unsafe to operate, avoid driving it and seek professional inspection.
Analyze this code with MecaOBD
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