P0A8614 Volt Power Module Current Sensor A Circuit
- 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
- The 14 volt power module is the DC/DC converter that feeds the 12 V network of a hybrid or electric vehicle from the high-voltage battery; GM calls it the Accessory Power Module (APM). Current sensor A measures the current flowing through this converter. P0A86 is the general circuit code for that sensor, used when the controller recognises a fault in the sensor circuit without classifying it as low, high, implausible or intermittent (P0A87 to P0A8A). No manufacturer documents this code publicly; GM's published tables for the same APM input sensor use only the low/high codes P0A88 and P0A89. With an untrustworthy current reading the hybrid controller may limit or switch off the converter, so the 12 V battery can run down over time.
- What you may notice
- Hybrid or charging system warning lamp on
- 12 V battery discharges, low-voltage warnings
- Possibly no other noticeable change in driving
- Likely causes
- LikelyCurrent sensor inside the 14 V power module faulty (usually not replaceable separately)
- PossibleDamaged wiring or corroded connector between module and hybrid controller
- RareSoftware fault in the module or hybrid 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: €100 – €1,800
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.