Pedal Correlation PDS2 and HPDS
P1257 — Pedal Correlation PDS2 and HPDS
System: Powertrain | Type: Manufacturer-Specific | Make: Generic
P1257 is a manufacturer-specific powertrain diagnostic trouble code. It belongs to the P-prefix family of codes, which covers engine, transmission, emissions, or fuel-system faults.
When P1257 is stored, the module has detected a correlation fault — two sensors that should track each other have diverged beyond tolerance.
Scanning & clearing: A generic OBD-II scan tool will usually read and clear powertrain (P) codes. For live data, freeze-frame capture, and bi-directional tests you may need a more capable scan tool that supports the vehicle's ECM protocol.
P1257 is a manufacturer-specific code. The same code string on a different make may have a different meaning. Always confirm the code's definition against the vehicle's service information for the specific make and model under test.
Pedal Correlation PDS2 and HPDS
Detailed possible causes for P1257 are available to TaT members.
Unlock with Free TrialStep-by-step diagnostic guidance for P1257 is available to TaT members. Our Diagnostic Assistant provides professional-level troubleshooting procedures written by experienced technicians.
Unlock with Free Trial| Code | P1257 |
| System | Powertrain |
| Type | Manufacturer-Specific |
| Make | Generic |
| Causes | Available |
| Diag. Assistant | Available |
| Video | — |
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