Powertrain, generic (extended)

P2067 Fuel Level Sensor B Circuit Low

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modeNo

P2067 sets when the input from the second fuel level sender drops below its valid floor, usually a grounded signal wire or a sender resistance near zero. Ford's saddle-tank trucks flag it below 5 ohms (under one A/D count) and allow 30 s for the electrical check. GM's 2020 table, written for dual-tank vehicles, sets it when the secondary sender reads under 10 % of its 5 V range in 100 of 125 samples; Type B, two trips. Mercedes lists it as P206700, the secondary fill level sender grounded. Two bulletins point away from the tank: on 2021 Pacifica and Voyager the code appeared on front-drive vans running all-wheel-drive PCM software, and Genesis issued an ECM logic update for P2067 on the 2018 G80 5.0, where Hyundai calls sensor B the main sender. Driving is unaffected; the gauge is not.

Likely causes

Sender signal wire shorted to ground or chafed on the tank strap
Sender card shorted internally
PCM software for the wrong drivetrain or tank version
Diagnostic logic needing an ECM update (Genesis G80)

Symptoms

  • MIL on with no change in driving
  • Fuel gauge too low, empty or dropping suddenly
  • Low fuel warning without reason

Repair estimate

DifficultyMediumDIY possible
Parts and labour€0–450
Time0.3–3 h

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

Parts involved

fuel level sensor b

Related codes

P2065P2068P2069P0462

References: gsi.ext.gm.com, newtonnet.co.uk, static.nhtsa.gov, static.nhtsa.gov.