P1418 CADILLAC - Secondary Air Injection System Relay 'A' Control Circuit High
P1418 CADILLAC Possible Causes
- Faulty Secondary Air Injection (AIR) System Relay
- Secondary Air Injection System Relay harness is open or shorted
- Secondary Air Injection System Relay circuit poor electrical connection
How is the P1418 CADILLAC code repair?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.
What is the cost to diagnose the P1418 CADILLAC code
Labor: 1.0The cost to diagnose the P1418 CADILLAC code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.
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- Engine Light ON (or Service Engine Soon Warning Light)
P1418 CADILLAC MeaningA Secondary Air Injection (AIR) pump is used on this vehicle to lower tail pipe emissions on start-up. The Powertrain Control Module (PCM) supplies a ground to the AIR pump relay, which energizes the AIR pump. The PCM monitors the HO2S voltages to diagnose the AIR system. During the AIR test, the PCM activates the AIR pump during closed loop operation. When the AIR is activated, the PCM monitors the HO2S voltages and short term fuel trim values for both banks of the engine. If the AIR system is operating properly, the HO2S voltages should go low and the short term fuel trim should go high.
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