What P0175 Means on the 2024 Toyota Camry
The P0175 code on your 2024 Toyota Camry means the ECM has detected a rich condition on bank 2 — too much fuel relative to air. The 2024 Camry (8th generation, final year) is available with the 2.5L Dynamic Force four-cylinder (203 hp) or the 2.5L hybrid. The conventional 2.5L uses both port and direct injection (D-4S system) for optimal efficiency. As an inline-four engine, the bank 2 reference in P0175 relates to the ECM's fuel trim monitoring scheme.
Symptoms
- Check engine light on
- Fuel smell from exhaust
- Rough or uneven idle
- Black soot at the tailpipe
- Fuel economy below the rated 28–39 mpg
- Possible engine stumble or misfire
Top Causes on the 2024 Camry
1. Defective O2 Sensor (High Likelihood)
A factory-defective oxygen sensor that reads falsely lean causes the ECM to add excess fuel. The 2024 Camry's 2.5L engine uses air-fuel ratio sensors upstream and conventional O2 sensors downstream. A sensor with an internal calibration error can send incorrect voltage readings from day one. Toyota's quality control is excellent, but individual sensor defects can occur on any vehicle.
2. Fuel Injector Issue (Medium Likelihood)
The 2.5L Dynamic Force engine uses Toyota's D-4S dual injection — both port and direct injectors. Either type can develop a sealing issue that allows fuel to leak when the injector should be closed. Direct injectors operate at very high pressures and are more susceptible to manufacturing-related seal issues. A faulty injector would be a warranty repair on a 2024 model.
3. Fuel Pressure Control Fault (Medium Likelihood)
The D-4S system manages two separate fuel pressure circuits — low-pressure for port injection and high-pressure for direct injection. A faulty pressure sensor, control valve, or software calibration issue can cause elevated fuel pressure in either circuit. Toyota may have released an ECM software update for the 2024 model year to refine fuel pressure control.
4. EVAP Purge Valve Stuck Open (Low Likelihood)
A purge valve that fails in the open position continuously feeds fuel vapor into the intake. On a new vehicle, this is a simple manufacturing defect. The dealer can command the valve on and off to verify proper operation.
Diagnostic Steps
- Check for TSBs — Toyota may have service bulletins for the 2024 Camry.
- Monitor fuel trims — Negative LTFT below -8% confirms rich condition.
- Test O2/A-F sensors — Verify sensor output against Toyota specifications.
- Check fuel pressure — Monitor both port and direct injection rail pressures.
- Test EVAP system — Verify purge valve operation.
Cost Estimates (Reference)
- O2/A-F sensor: $110–$280
- Fuel injector: $140–$380
- Fuel pressure sensor/valve: $150–$350
- EVAP purge valve: $80–$180
Warranty
Your 2024 Camry is covered by Toyota's 3-year/36,000-mile basic warranty and 5-year/60,000-mile powertrain warranty. O2 sensors are covered under the 8-year/80,000-mile federal emissions warranty. P0175 should be repaired at no cost at a Toyota dealer.
Driving With P0175
Short-term driving is safe, but schedule a dealer visit within a week. Toyota's D-4S system is sophisticated, and running rich can foul spark plugs and stress the catalytic converter. Since the repair is free under warranty, prompt attention makes sense.