System: Powertrain (P-Code)
SAE Standard (Generic)
Family: Crank Position Sensor Circuit
Code P0335: Crankshaft Position Sensor A Circuit
Diagnostic & Technical Explanation
Code P0335 (Crankshaft Position Sensor A Circuit) sets when the ECM sees an open circuit, out-of-range voltage, no signal, or an erratic pulse pattern from a crankshaft position sensor (or, on older distributor-based ignition systems, the distributor's engine-speed pickup that serves the same function). Common causes are a sensor with too large an air gap to the reluctor wheel, metal debris bridging the sensor tip, a corroded connector, or chafed wiring between the sensor and the ECM.
First-listed procedure
Rank #1
Inspect and reseat the crankshaft position sensor 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 3 procedure(s) are in the licensed dataset. Ordering context.
Full family: Crank Position Sensor 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)