Fault Family
System: Powertrain (P-Codes)
3 SAE Codes
Throttle Position Output Circuit
Diagnostic & Technical Explanation
Code P2620 (Throttle Position Output Circuit/Open) covers the ECM's re-transmitted throttle position output, a scaled analog or PWM signal sent to a separate module such as a transmission controller or all-terrain accessory controller, and flags the line open, shorted low, or shorted high. The throttle position sensors themselves have separate input codes, so the fault points to inter-module wiring damage, a failed receiving module pulling the line out of range, or the ECM's output driver.
These 3 diagnostic trouble codes share one
detection mechanism and one repair path, which is why MechanicDB groups them into a single
authored fault family rather than repeating the same explanation 3 times.
What this page does not show
This page publishes the fault mechanism and the code index. The licensed dataset adds, for
every one of the 15,886 codes, the full authored repair set (56,729 procedures in total)
with the fields deliberately withheld here:
- Procedures 2..n after the first-listed procedure
- Aftermarket parts cost ranges in USD (
est_parts_cost_min/max_usd)
- Professional labor-hour estimates (
est_labor_hours)
- Step-by-step diagnostic and repair instructions
- Replacement-part mappings and catalog lookups
- 6,637 manufacturer-specific OEM codes across 32 makes ($149 tier)