Powertrain, generic (extended)

P2068 Fuel Level Sensor B Circuit High

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modeNo

P2068 is the upper limit fault of the second fuel level sender: its signal sits above anything a working sender can produce, which normally means an open circuit, a lost sender ground or a short to a supply voltage. Ford reports it above 200 ohms, more than 253 A/D counts, using the same 30 s electrical check as for sender A. GM's 2020 dual-tank table needs 100 out of 125 samples with the secondary sender above 60 % of the 5 V span, Type B. Mercedes lists it as P206800, the secondary fill level sender shorted to plus. Ford SSM 52771 covers 2024 Bronco Sport, Escape and Corsair that displayed Fuel Level Low with the MIL and P2068 although the tank was not low; its pinpoint test was rewritten. Because the gauge combines both senders, one bad reading skews the whole display.

Likely causes

Open signal or ground wire, unplugged sender connector
Sender card worn through or wiper lifted off the track
Signal wire shorted to a supply voltage

Symptoms

  • Low fuel warning or empty gauge with fuel in the tank
  • MIL on
  • Range estimate jumps or is implausible

Repair estimate

DifficultyMediumDIY possible
Parts and labour€30–450
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

P2065P2067P2069P0463

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