P0B69Hybrid/EV Battery Voltage Sense J Circuit Range/Performance
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- P0B69 is set when channel J is electrically present but its readings do not behave plausibly. GM's BAS Plus mild hybrid explains the logic most clearly: once the average cell voltage moves by more than 0.045 V, the cell under test must move in the same direction and by at least half as much; 20 failures in 40 samples set the code as Type B, two trips. The 2019 lithium-ion tables use a tighter trigger of 0.022 V and 35 of 40 samples, Type A. On the 2012 two-mode trucks the code belongs to nickel-metal hydride block 10 and compares its scaled value with the pack voltage. Neither Ford nor Chrysler publishes this channel; Chrysler's Pacifica bulletin stops at sense 6.
- What you may notice
- MIL without obvious driveability problem
- Hybrid assist reduced
- Likely causes
- LikelyChannel J input reacting too little to real voltage changes
- PossibleCorroded or high-resistance cell tap
- RareCalibration error in the battery controller
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Workshop only · Usually a job for a workshop.Typical cost: €50 – €5,000
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.