DTC P15FB
Diagnostic Instructions
DTC Descriptor
DTC P15FB: Brake Pedal Position Sensor Signal Message Counter Incorrect
Circuit/System Description
The electronic brake control module (EBCM) monitors the brake pedal position sensor in order to provide emission related brake pedal position information to the engine control module (ECM). The EBCM sends the information, via the serial data circuit, to the ECM in a continuously repeating series of 16 rolling counts, with each count assigned a value. When the ECM determines that too many of the counts have an incorrect value, the ECM sets DTC P15FB.
Conditions for Running the DTC
| • | DTC P15FB runs continuously when the above condition is met. |
Conditions for Setting the DTC
The ECM detects that too many of the rolling counts have an incorrect value.
Action Taken When the DTC Sets
| • | DTC P15FB is a Type B DTC. |
| • | Brake pedal position is defaulted to 0 for as long as the fault is active. |
Conditions for Clearing the DTC
DTC P15FB is a Type B DTC.
Reference Information
Description and Operation
Hybrid Modes of Operation Description
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Scan Tool Reference
Control Module References for scan tool information.
Circuit/System Verification
- DTC P15FB is an informational DTC. If there are no other engine control DTCs set, refer to Diagnostic Trouble Code (DTC) List - Vehicle for diagnosis of EBCM DTCs.
- Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
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