What it means
Voltage on the charge status indicator a control circuit is below the expected window. Wiring faults of this kind typically come from chafing, water ingress at connector seals, or pin push-back — a wiggle test on the harness while the code is active often confirms the location.
At a glance
- Usually lights the check-engine light
How it works
Charge status indicator A is operated through its own control circuit to show charging status. The control module monitors voltage on circuit A, and this code sets when that voltage falls below the expected window, as can happen with a short to ground, a faulty indicator, or an intermittent connector contact.
Common causes
Most likely first.
- Wire shorted to ground
- Lamp internal short
- Connector pins corroded - high contact resistance
Symptoms
- Charge status indicator may not illuminate or may behave unexpectedly
- Hybrid/EV system warning light may turn on
How to diagnose it
- Record freeze-frame data and check live voltage or command data for charge status indicator A while the warning is present.
- Inspect indicator A’s connector and wiring for chafing, water ingress, pushed-back pins, corrosion, or a loose fit.
- With the circuit monitored, gently move the accessible harness to see whether circuit A’s reading or indicator operation changes.
- Check circuit A for a short to ground and test the indicator for an internal short using the manufacturer’s procedure.
- Measure circuit voltage and continuity under specified conditions and compare with the manufacturer’s specification.
Common fixes
- Repair chafed wiring shorted to ground in charge status indicator A’s circuit.
- Dry, clean, or repair a water-damaged or corroded connector and restore terminal fit.
- Replace indicator A if it has an internal short.
- Repair any remaining circuit fault and confirm indicator A responds correctly.
Can I keep driving?
A may fail to illuminate or behave unpredictably, and the hybrid/EV warning may come on; this code alone does not establish whether charging is safe or available. Check charging status through the vehicle’s normal display or charging equipment and stop if a separate charging or high-voltage warning appears.
A code shows where the control module detected a fault, not always which part failed. Check the causes in order and confirm with a test before replacing parts. Have several codes? Check them together
This is a generic code: it means the same on every make. The car’s maker may add more detail in its own service information.