System: Powertrain (P-Code)
SAE Standard (Generic)
Family: Throttle Position Output Circuit
Code P2620: Throttle Position Output Circuit/Open
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.
First-listed procedure
Rank #1
Repair throttle output signal wiring
Moderate DIY
This is the first procedure in the authored
consideration order, not a measured cause likelihood. Execute it only when its prerequisites
and diagnostic findings support it. Its cost and labor estimates (where known), the step-by-step procedure and the
remaining 2 procedure(s) are in the licensed dataset. Ordering context.
Full family: Throttle Position Output Circuit
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)