The control module detected an interruption (open circuit) in the Hybrid Battery Negative Contactor Control circuit, so the expected electrical continuity was not present.
TuningBot DTC Database · v4.37.15
P0ADD Hybrid Battery Negative Contactor Control Circuit/Open
Generic (OBD-II) interpretation in the TuningBot DTC database.
What P0ADD means
Related and nearby codes
How to read P0ADD
Powertrain: engine, transmission and driveline systems.
Generic SAE-standard code: same meaning on every make.
Specific fault index within the subsystem.
Frequently asked questions about P0ADD
What does P0ADD mean?
Hybrid Battery Negative Contactor Control Circuit/Open. The control module detected an interruption (open circuit) in the Hybrid Battery Negative Contactor Control circuit, so the expected electrical continuity was not present.
Is P0ADD generic or manufacturer-specific?
P0ADD is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.
Can TuningBot remove P0ADD at file level?
If the fault logic lives in the ECU calibration, yes: our DTC Removal file service disables the specific fault entry. Checksum correction is not included: it is a separate, optional service. Not sure whether your case qualifies? Request a free assessment and our engineers will check your ECU file.
Other file services
Understand the system behind this code: Diagnostic Strategy and DTC Logic
