The OBDII system in your 2014 Honda CRV monitors various emission-related components. If these monitors aren’t ready, your vehicle might fail an emissions test. Completing a specific drive cycle can help ensure these monitors are set. This cycle allows the OBDII system to gather the necessary data for proper diagnosis.
The OBDII drive cycle begins with a cold start. Ensure your engine coolant temperature is below 122°F (50°C) and the difference between coolant and air temperature sensor readings is less than 11°F (6°C). Importantly, avoid turning the ignition key on before the cold start; otherwise, the heated oxygen sensor diagnostic might not run.
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Idle: Immediately after starting the engine, idle in Drive for 2.5 minutes with the A/C and rear defroster on. This allows the OBDII system to check the oxygen sensor heater circuits, air pump, and evaporative emission (EVAP) purge system.
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Acceleration & Steady Speed: Turn off the A/C and rear defroster. Accelerate to 55 mph (88 km/h) at half throttle. This tests for ignition misfire, fuel trim, and canister purge. Maintain a steady 55 mph for three minutes. During this time, the EGR system, air pump, O2 sensors, and canister purge are monitored.
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Deceleration: Coast down to 20 mph (32 km/h) without using the brakes or clutch. This checks the EGR and purge functions.
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Acceleration: Accelerate again to 55-60 mph (88-96 km/h) using half throttle. This repeats the misfire, fuel trim, and purge checks.
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Steady Speed: Maintain a constant speed between 55-60 mph for five minutes. This crucial step allows the OBDII system to monitor catalytic converter efficiency, misfire, EGR, fuel trim, oxygen sensors, and purge functions.
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Final Deceleration: Coast down to a complete stop without braking. This performs a final check of the EGR and canister purge.
Completing this drive cycle should set the readiness monitors in your 2014 Honda CRV, allowing you to pass your emissions test. However, if problems persist, consult a qualified mechanic or your Honda dealer for further diagnosis and repair. Remember that specific driving conditions and vehicle maintenance can influence monitor readiness.
