P0DA8Hybrid/EV Battery Voltage/Drive Motor A Inverter Voltage Correlation
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- Needs a drive cycle to confirm a fix
- How the car detects it
- P0DA8 compares the traction battery voltage with the voltage measured at the inverter of drive motor A; both should match closely once the contactors are closed. Denso cites earlier diagnostics that blame a voltage sensor when the two differ by more than a set amount (US9819293B2). Honda describes it as a voltage fault of its MPI inverter module: recall 15-057 for the 2014–15 Accord Hybrid ties it to the battery cell voltage sensor misreading inverter noise, with an electric-only emergency mode capped near 40 mph, and was a vehicle emissions recall in California. Warranty extensions 20-030 and 20-021 for Civic Hybrid 2012–15 and ILX Hybrid 2013 list it among codes from a cracked solder joint in the inverter, which is replaced. Ford logs P0DA8 on 2021–22 Mach-E with a flat 12 V battery and replaces the HV junction box.
- What you may notice
- MIL and hybrid system warning
- Fail-safe electric mode with strongly limited speed (Honda)
- Discharged 12 V battery (Ford Mach-E)
- Likely causes
- LikelyCracked solder joint in the motor power inverter (Honda Civic/ILX Hybrid)
- PossibleBattery cell voltage sensor software misreading inverter noise (Honda Accord Hybrid recall)
- PossibleHigh-voltage battery junction box faulty (Ford Mach-E)
- RareBattery-side or inverter-side voltage sensor drifting
- 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: €100 – €5,000
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.