P0AF0 on Chevrolet
Hybrid Battery System Voltage
P0AF0 on Chevrolet vehicles indicates hybrid battery system voltage. Au7o has documented this code across 1 Chevrolet model — most commonly on Silverado EV. This hybrid/electric powertrain code relates to a detected problem in the high-voltage hybrid battery system's voltage monitoring. The vehicle's controller continuously watches the battery pack's voltage to keep it within safe operating limits and to coordinate charging and electric drive. When the measured voltage or the monitoring circuit falls outside expected parameters, the code is set. Because exact definitions vary by manufacturer for codes in this range, it should be diagnosed with the factory service information; expect a hybrid warning light and possibly reduced electric assist. Always observe high-voltage safety precautions when servicing.
Common Causes of P0AF0
- •Weak or degraded hybrid battery cells/modules
- •Faulty battery voltage sense circuit or sensor
- •Damaged or corroded high-voltage connectors/wiring
- •Faulty battery management/control module
- •Poor cooling causing battery imbalance
- •Low 12V auxiliary battery affecting module operation
- •Inverter or related high-voltage component fault
P0AF0 on Chevrolet by Model
Chevrolet Silverado EV(1 issue)
- Level 2 Charging Interruptions and EVSE Communication Faults2024-2025
Early Silverado EVs experience intermittent Level 2 charging interruptions where the vehicle stops charging mid-session or fails to initiate charging. The issue is attributed to EVSE communication protocol timing and software bugs in the onboard charging module. DC fast charging is generally unaffected.
Looking for P0AF0 on a different make?
View P0AF0 across all makes →Frequently Asked Questions
What does P0AF0 mean on Chevrolet?▼
P0AF0 stands for "Hybrid Battery System Voltage." This hybrid/electric powertrain code relates to a detected problem in the high-voltage hybrid battery system's voltage monitoring. The vehicle's controller continuously watches the battery pack's voltage to keep it within safe operating limits and to coordinate charging and electric drive. When the measured voltage or the monitoring circuit falls outside expected parameters, the code is set. Because exact definitions vary by manufacturer for codes in this range, it should be diagnosed with the factory service information; expect a hybrid warning light and possibly reduced electric assist. Always observe high-voltage safety precautions when servicing. On Chevrolet specifically, this code is documented across 1 model.
What causes P0AF0 on Chevrolet vehicles?▼
Common causes on Chevrolet: Weak or degraded hybrid battery cells/modules, Faulty battery voltage sense circuit or sensor, Damaged or corroded high-voltage connectors/wiring, Faulty battery management/control module, Poor cooling causing battery imbalance. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P0AF0 on a Chevrolet?▼
Repair costs vary widely depending on the root cause and specific Chevrolet model.
Which Chevrolet models have P0AF0 documented?▼
Au7o has documented P0AF0 on 1 Chevrolet model: Silverado EV.