OBD Guide
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P081F

Brake Transmission Shift Interlock (BTSI) Signal Correlation

P081F is an OBD-II diagnostic trouble code meaning: Brake Transmission Shift Interlock (BTSI) Signal Correlation. Common causes: malfunction of the brake pedal position sensor, damage to btsi wiring harness. Estimated repair cost: $17–89.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$17–89 (est.)

Symptoms

  • Difficulty shifting gears
  • Gear selector stuck in Park position
  • Check Engine light comes on
  • The car does not respond to pressing the brake pedal when changing gears

Causes

  • Malfunction of the brake pedal position sensor
  • Damage to BTSI wiring harness
  • Mechanical problems in the gear shift mechanism
  • TCM module malfunction
  • Fuse or relay problems

How to Fix

  1. Check the condition of the brake pedal position sensor
  2. Inspect the BTSI wiring harness for damage.
  3. Check the gear shift mechanism for mechanical damage
  4. Scan the TCM for errors
  5. If necessary, replace faulty components

Related codes

P0800P0801P081C

Error P081F by Vehicle Brand

AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye

FAQ

What does the P081F code mean?

P081F is an OBD-II diagnostic trouble code that indicates: Brake Transmission Shift Interlock (BTSI) Signal Correlation

What causes a P081F error code?

The most common causes of P081F include: Malfunction of the brake pedal position sensor; Damage to BTSI wiring harness; Mechanical problems in the gear shift mechanism; TCM module malfunction.

How do I fix a P081F diagnostic trouble code?

To fix P081F: Check the condition of the brake pedal position sensor. Inspect the BTSI wiring harness for damage.. Check the gear shift mechanism for mechanical damage. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P081F?

Limited driving only, diagnose soon

How much does it cost to fix P081F?

The estimated repair cost for P081F is $17–89. Actual cost depends on your vehicle, location, and labor rates.

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