C0077Low Tire Pressure
- Generic OBD-II code · Chassis
- How the car detects it
- Covers a low-tire-pressure indication reaching the ABS/ESC or body module, typically from an indirect tyre-pressure monitoring system that infers pressure from wheel behaviour rather than from in-tyre sensors. An under-inflated tyre has a smaller rolling radius and turns faster, and its vibration spectrum shifts; the system detects this from the ABS wheel speed signals and raises a low-pressure warning. Honda documents VSA code C0077-78, which refines the warning threshold for low tyre pressure, where the indicator stays on although the tyres are correctly inflated, calling for a TPMS software update; Volvo documents BCM-C007768 on indirect-TPMS vehicles. A set code warns the driver and may require a reset after correct inflation. Indirect TPMS patents describe the wheel-speed and resonance methods used.
- What you may notice
- Low tire pressure indicator on
- Warning despite correct pressure
- Requires reset after inflation
- Likely causes
- LikelyOne or more tyres under-inflated
- PossibleSystem not reset after inflation
- RareTPMS threshold/software issue
- Repair
- Easy · Often possible to do yourself.Typical cost: €0 – €200
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.