Start by checking the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.
The cost to diagnose the P0134 2009 HONDA ACCORD code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.
1. When the A/F sensor does not activate in a fixed time after the A/F sensor heater starts to warm up (within high A/F sensor internal resistance), a malfunction of the A/F sensor heater is detected, and a DTC is stored.
2. When the A/F sensor heater does not reactivate within a fixed time after the heater became inactive (with high A/F sensor internal resistance) from active (with low A/F sensor internal resistance) though the heater is ON, a malfunction in the A/F sensor heater is detected, and a DTC is stored.
The air/fuel ratio (A/F) sensor is activated by warming the element with the heater and by maintaining it at a steady high temperature to calculate accurate air/fuel (A/F) ratio. The A/F sensor does not become active when the element is not warmed enough due to a heater malfunction, etc., and the exhaust emissions deteriorate. The engine control module (ECM)/powertrain control module (PCM) monitors the A/F sensor active condition by the A/F sensor internal resistance.
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