Check 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 pins.
The cost to diagnose the P1183 Hyundai code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.
Rail pressure regulator, which is installed in high-pressure pump, controls rail pressure as regulating fuel quantity supplied to the common rail. ECM performs duty control of rail pressure regulator in order to keep rail pressure at target rail pressure according to current engine loading condition.
As rail pressure regulator duty rises, more fuel flows into common rail so, rail pressure increases.
When rail pressure regulator operation stops due to the power supply cut off to rail pressure regulator, the maximum fuel quantity flows to common rail as passage inside regulator fully opened.
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