Powertrain, generic (extended)

P2BE0 Hybrid/EV Battery Coolant Level Sensor Circuit/Open

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

P2BE0 concerns the wiring of the level sensor in the coolant reservoir of the high-voltage battery loop: its signal is missing or the line is broken. Stellantis documents the code as P2BE0-00 on the 2021-22 Chrysler Pacifica Hybrid, where the cluster asks for hybrid system service; Tech Tip 9004552 tells dealers to photograph the level in the battery coolant bottle before swapping sensor or bottle, so the real level is part of the diagnosis. GM watches the same part on the Chevrolet Volt under its own codes P1FFB to P1FFF; there an open line drives the signal above 4.0 V, 40 of 50 samples at 100 ms, Type A. Plausibility, low and high faults are P2BE1 to P2BE3. Expect a hybrid warning and possibly blocked charging.

Likely causes

Battery coolant level actually low (leak or after service), bulletin asks to check first
Level sensor defective, e.g. internal solder joints (GM Volt)
Open signal wire or loose connector at the reservoir
Internal break in the sensor jumper harness

Symptoms

  • Service hybrid system message on the cluster
  • MIL on
  • Plug-in charging disabled on some models

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€30–350
Time0.5–2 h

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

Parts involved

hv battery coolant level sensorwiring harnessbms

Related codes

P2BE1P2BE2P2BE3P2B28P0C4A

References: static.nhtsa.gov, http:, gsi.ext.gm.com, static.nhtsa.gov.