Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
DTC Parameters
- Engine running for more than 200 seconds.
- Engine speed is 2350-3000 RPM for M/T or 1800-2300 RPM for A/T.
- ECT more than 158°F (70°C).
- TP angle 22-40 percent (M/T), 8-15 percent (A/T).
- System in closed-loop.
- EVAP purge is commanded to 80 percent or greater.
- Fuel level is more than 10 percent.
- No CKP, ECT, EVAP, fuel injector, fuel tank pressure, fuel trim, IAT, idle speed, MAP, misfire, PCM internal fault or TP sensor DTCs are set.
DTC sets when average response time of lean to rich switches is more than 730 milliseconds (A/T), 625 milliseconds (M/T); or average response time of rich to lean switches is more than 1200 milliseconds (A/T) or 975 milliseconds (M/T). Condition exists for longer than 30 seconds.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.