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, US |
|---|---|---|---|
| P0087 | Fuel pressure too low | Short trips | $370 to $1,075 |
| P0089 | Fuel pressure regulator not holding correct pressure | Short trips | $370 to $1,075 |
| P0101 | Air flow sensor reading seems off | Usually | $120 to $390 |
| P0102 | Air flow sensor signal too low | Usually | $120 to $390 |
| P0103 | Mass airflow sensor reads too high | Short trips | $120 to $390 |
| P0106 | Manifold pressure sensor reading doesn't match | Usually | $90 to $460 |
| P0107 | Manifold pressure sensor reads low | Short trips | $55 to $250 |
| P0108 | Manifold pressure sensor signal too high | Usually | $90 to $460 |
| P0113 | Intake air temperature signal too high | Usually | $120 to $390 |
| P0171 | Engine getting too much air or too little fuel (bank 1) | Usually | $90 to $460 |
| P0172 | Engine getting too much fuel (bank 1) | Usually | $170 to $820 |
| P0174 | Engine getting too much air or too little fuel (bank 2) | Usually | $90 to $460 |
| P0175 | Engine getting too much fuel (bank 2) | Usually | $170 to $820 |
| P0191 | Fuel rail pressure sensor reading off | Short trips | $370 to $1,075 |
| P0193 | Fuel rail pressure sensor reads high | Short trips | $55 to $250 |
| P0201 | Cylinder 1 injector circuit problem | Short trips | $170 to $820 |
| P0234 | Turbo boost pressure too high | No | $140 to $660 |
| P0299 | Turbo not making enough boost | Short trips | $140 to $660 |
| P0463 | Fuel level sensor reading too high | Usually | $370 to $1,075 |
| P1101 | Airflow sensor out of expected range | Usually | $120 to $390 |
| P2096 | Fuel mix too lean after catalytic converter (bank 1) | Usually | $100 to $350 |
| P2097 | Fuel mix too rich after catalytic converter (bank 1) | Usually | $100 to $350 |
| P2098 | Post-catalyst fuel trim too lean (bank 2) | Short trips | $90 to $460 |
| P2099 | Post-catalyst fuel trim too rich (bank 2) | Short trips | $170 to $820 |
| P2187 | System too lean at idle (bank 1) | Short trips | $90 to $460 |
| P2196 | Oxygen sensor stuck rich (bank 1, before converter) | Usually | $100 to $350 |
Typical range, estimate, for the most common repair for each code. Prices updated October 2026. Not a repair shop, estimates only.