The alternator output at 14 volts then drops to below 12 and the battery light comes on the car shuts down with drained battery
Hi there
This code is for the oil pressure sensor stuck high. If the alternator is losing voltage it's usually a problem with the voltage regulator
P1289 HONDA - Engine Oil Pressure Sensor Stuck High Read more: https://www.autocodes.com/p1289_honda.html
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