OBD-II Fault Code

C1287: Booster Pedal Force switch circuit Failure

Meaning, symptoms, likely causes, diagnostic checks and repair guidance for C1287.

System family

Chassis

Manufacturer-specific

Repair category

Throttle / pedal sensor

Use this category to narrow your checks before replacing parts.

Severity

High

Severity is a general guide. Confirm with scan-tool data and vehicle symptoms.

What C1287 usually means

Booster Pedal Force switch circuit Failure.

Common symptoms

ABS/traction/steering/suspension warning lamp or abnormal chassis behaviour; Reduced power / limp mode possible; Hesitation or unstable idle

Likely causes

Dirty throttle body; Faulty throttle/pedal position sensor; Wiring/connector fault; Adaptation needed

Diagnostic checks

Inspect wheel/brake/suspension area, connectors, sensor wiring and module power/ground; Inspect throttle body and connector; Check sensor correlation data with scan tool

Repair guidance

Clean throttle body if appropriate, repair wiring, perform throttle relearn, replace failed sensor/body after testing

Verification after repair

Clear code, road-test safely at low speed first, then rescan

Note: Confirm vehicle make/model/year because manufacturer-specific codes can vary; Manufacturer-specific: confirm definition and test steps in the vehicle service manual. A DTC identifies a circuit or system condition, not always the failed part.