P2069Fuel Level Sensor B Circuit Intermittent
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Needs a drive cycle to confirm a fix
- How the car detects it
- P2069 covers brief dropouts on the second fuel level sender: the signal leaves its valid window for moments and comes back, too short for a hard low or high fault. Mercedes is the one maker found to document it, as P206900 in the FSCM_GEN4 fuel pump control unit, a sporadic malfunction of the secondary fill level sensor; a 2025 Mercedes bulletin on implausible gauge readings has connectors and harness routing checked. Ford handles a jumpy sender B under P2066 instead, so on Ford vehicles P2069 is unlikely. Behind such faults are worn spots on the sender card where the wiper loses contact, connectors at the tank flange that move with the body, or a harness rubbing on a bracket. CARB requires fuel level inputs to be monitored. The gauge may twitch and the low fuel light may flicker on and off.
- What you may notice
- Fuel gauge needle twitches or drops briefly
- Low fuel light flickers on and off
- Intermittent MIL
- Likely causes
- LikelyWorn spot on the sender card at the usual fuel level
- LikelyLoose or corroded terminal at the tank flange connector
- PossibleHarness rubbing on a bracket or tank strap
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Often possible to do yourself.Typical cost: €30 – €450
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.