The control module judged the Exhaust Brake Input signal implausible: it stayed inside electrical limits but did not match the value expected for the current operating conditions.
TuningBot DTC Database · v4.37.15
P04D4 Exhaust Brake Input Circuit Range/Performance
Generic (OBD-II) interpretation in the TuningBot DTC database.
What P04D4 means
Related and nearby codes
How to read P04D4
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 P04D4
What does P04D4 mean?
Exhaust Brake Input Circuit Range/Performance. The control module judged the Exhaust Brake Input signal implausible: it stayed inside electrical limits but did not match the value expected for the current operating conditions.
Is P04D4 generic or manufacturer-specific?
P04D4 is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.
Can TuningBot remove P04D4 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
