System: Powertrain (P-Code)
SAE Standard (Generic)
Family: Throttle Position Sensor G Circuit
Code P212A: Throttle Position Sensor/Switch G Circuit
Diagnostic & Technical Explanation
P212A (Throttle Position Sensor/Switch G Circuit) covers an additional redundant throttle position sensor channel (labeled G) used on some multi-sensor throttle bodies as a cross-check against the primary position sensors. The ECM distinguishes a missing or out-of-range signal, an intermittent connection, and a signal that fails to track the other channels smoothly, and the sensor element itself or its connector are the parts most often at fault.
First-listed procedure
Rank #1
Inspect and clean throttle position sensor G connector
Easy 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 Sensor G 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)