P0113 (generic)
Generic Powertrain — Fuel & Air Metering
System: Powertrain · Fuel & Air Metering
Severity: moderate · Inspection: often fails
Description
Fuel and air metering circuit fault. Likely sensor or wiring issue affecting fuel trim. Verify the specific sensor identified by the code and inspect its wiring/connector.
Diagnostic snapshot P0113
- Difficulty
- 4/10 — DIY with OBD-II scanner
- Est. repair cost
- $40 – $250 (parts + typical shop labor)
- Common symptoms
- Check engine light (MIL)
- Rough idle
- Poor fuel economy
Diagnostic workflow
- Confirm P0113 with a live scan — note pending vs stored and freeze frame data.
- Verify reported symptoms: Check engine light (MIL), Rough idle, Poor fuel economy.
- Inspect wiring/connectors and related sensors before replacing modules.
- Most likely fixes: Clean or replace MAF sensor.
- Clear codes and road-test; re-scan after two drive cycles if the monitor must set.
Topics
- OBD-II and scan tools (guide)
- Powertrain DTCs (P-prefix) (system)
Related symptoms
- Check engine light (MIL) (weight 0.700)
- Rough idle (weight 0.450)
- Poor fuel economy (weight 0.400)
Common fixes (curated)
- Clean or replace MAF sensor (rank 1)
Related articles
Diagnostic bundle (JSON)
Machine-readable graph: related codes, symptoms, fixes, topics, articles, and curated sources rows. Append &external=1 for optional YouTube / Google CSE hits when API keys are configured (see web/.env.example).