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Results are grouped by useful content—not by paid placement or guessed parts. Describe the symptom naturally; IAR recognizes common alternate wording while keeping exact codes and vehicle details precise.
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Use operating conditions, code context, cylinder patterns, and targeted tests to separate ignition, fuel, air, mechanical, and control causes.
intermediateFirst determine whether the engine cannot make power, the transmission is not transferring it, or a chassis/control system is limiting torque.
intermediateThe control module detected a misfire pattern associated with cylinder 1. It does not identify the failed component.
Generic codeThe control module detected a misfire pattern associated with cylinder 2. It does not identify the failed component.
Generic codeThe control module detected a misfire pattern associated with cylinder 3. It does not identify the failed component.
Generic codeThe control module detected a misfire pattern associated with cylinder 4. It does not identify the failed component.
Generic codeThe control module detected a misfire pattern associated with cylinder 5. It does not identify the failed component.
Generic codeThe control module detected a misfire pattern associated with cylinder 6. It does not identify the failed component.
Generic codeThe control module detected a misfire pattern associated with cylinder 7. It does not identify the failed component.
Generic codeThe control module detected a misfire pattern associated with cylinder 8. It does not identify the failed component.
Generic codeThe control system reached a lean-condition diagnostic threshold for Bank 1. The data does not by itself prove a vacuum leak, MAF sensor, or fuel pump.
Generic codeThe control system reached a lean-condition diagnostic threshold for Bank 2. The data does not by itself prove a vacuum leak, MAF sensor, oxygen sensor, or fuel-delivery failure.
Generic codeThe control system reached a rich-condition diagnostic threshold for Bank 1. The data does not by itself prove an injector, fuel-pressure, MAF sensor, or oxygen-sensor failure.
Generic codeThe control system reached a rich-condition diagnostic threshold for Bank 2. The data does not by itself prove an injector, fuel-pressure, MAF sensor, or oxygen-sensor failure.
Generic codeThe control module detected intake-air-temperature sensor behavior outside its expected range or relationship. The code does not by itself prove the sensor, wiring, connector, intake condition, or control module is the cause.
Generic codeThe control module detected an intake-air-temperature sensor signal in a low range for its monitoring strategy. The code does not by itself prove the sensor, wiring, connector, intake condition, or control module is the cause.
Generic codeThe control module detected an intake-air-temperature sensor signal in a high range for its monitoring strategy. The code does not by itself prove the sensor, wiring, connector, intake condition, or control module is the cause.
Generic codeThe control module detected a malfunction in the mass-or-volume-air-flow circuit. The code does not by itself identify the sensor, wiring, intake path, power/ground, or control module as the cause.
Generic codeThe measured or modeled airflow was outside the expected relationship. The code does not automatically mean the MAF sensor itself failed.
Generic codeThe control module detected a mass-or-volume-air-flow circuit signal in a low range for its monitoring strategy. The code does not by itself prove a MAF sensor, wiring, connector, intake path, power/ground, or control module is the cause.
Generic codeThe control module detected a mass-or-volume-air-flow circuit signal in a high range for its monitoring strategy. The code does not by itself prove a MAF sensor, wiring, connector, intake path, power/ground, or control module is the cause.
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