Fuel and air codes
Fuel trim, air flow and fuel system codes. Pick your code for what it means, whether you can drive, common causes and what the repair usually costs.
| Code | What it means | Drive? | Typical, Boston |
|---|---|---|---|
| P0087 | Fuel pressure too low | Short trips | $400 to $1,150 |
| P0089 | Fuel pressure regulator not holding correct pressure | Short trips | $400 to $1,150 |
| P0101 | Air flow sensor reading seems off | Usually | $130 to $410 |
| P0102 | Air flow sensor signal too low | Usually | $130 to $410 |
| P0103 | Mass airflow sensor reads too high | Short trips | $130 to $410 |
| P0106 | Manifold pressure sensor reading doesn't match | Usually | $100 to $530 |
| P0107 | Manifold pressure sensor reads low | Short trips | $60 to $290 |
| P0108 | Manifold pressure sensor signal too high | Usually | $100 to $530 |
| P0113 | Intake air temperature signal too high | Usually | $130 to $410 |
| P0171 | Engine getting too much air or too little fuel (bank 1) | Usually | $100 to $530 |
| P0172 | Engine getting too much fuel (bank 1) | Usually | $180 to $910 |
| P0174 | Engine getting too much air or too little fuel (bank 2) | Usually | $100 to $530 |
| P0175 | Engine getting too much fuel (bank 2) | Usually | $180 to $910 |
| P0191 | Fuel rail pressure sensor reading off | Short trips | $400 to $1,150 |
| P0193 | Fuel rail pressure sensor reads high | Short trips | $60 to $290 |
| P0201 | Cylinder 1 injector circuit problem | Short trips | $180 to $910 |
| P0234 | Turbo boost pressure too high | No | $150 to $720 |
| P0299 | Turbo not making enough boost | Short trips | $150 to $720 |
| P0463 | Fuel level sensor reading too high | Usually | $400 to $1,150 |
| P1101 | Airflow sensor out of expected range | Usually | $130 to $410 |
| P2096 | Fuel mix too lean after catalytic converter (bank 1) | Usually | $110 to $370 |
| P2097 | Fuel mix too rich after catalytic converter (bank 1) | Usually | $110 to $370 |
| P2098 | Post-catalyst fuel trim too lean (bank 2) | Short trips | $100 to $530 |
| P2099 | Post-catalyst fuel trim too rich (bank 2) | Short trips | $180 to $910 |
| P2187 | System too lean at idle (bank 1) | Short trips | $100 to $530 |
| P2196 | Oxygen sensor stuck rich (bank 1, before converter) | Usually | $110 to $370 |
Typical range, estimate, for the most common repair for each code. Prices updated October 2026. Not a repair shop, estimates only.