Chassis, generic

C0077 Low Tire Pressure

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

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.

Likely causes

One or more tyres under-inflated
System not reset after inflation
TPMS threshold/software issue

Symptoms

  • Low tire pressure indicator on
  • Warning despite correct pressure
  • Requires reset after inflation

Repair estimate

DifficultyEasyDIY possible
Parts and labour€0–200
Time0.2–1 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

tires

Related codes

C0078C0083C0080

References: static.nhtsa.gov, patents.google.com.