P1004 CHRYSLER Possible Causes
- Faulty Short Runner Valve assembly
- Short runner valve circuit open or shorted
- Poor electrical connection in the short runner valve circuit
- Faulty Powertrain Control Module (PCM)
How is P1004 CHRYSLER Code Repaired?
Start by checking the “Possible Causes” listed above. Visually inspect the wiring harness and related connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.
When is the Code Detected?
The P1004 code is detected when it is determined that the value is outside the calibrated range in the power-off operating cycle, greater than 85% or less than 75%, or in the power-on cycle, greater than 55% or less than 35% duty cycle, condition lasting more than a calibrated duration, this DTC will be set.
Possible Symptoms
Engine light on (or service engine soon warning light)
P1004 CHRYSLER Meaning
The SRV (Short Runner Valve) system is used to improve engine performance. The SRV system allows intake boost air to bypass the long runners of the intake manifold between the intake manifold plenum and the intake manifold to cylinder head interface by providing a shorter runner directly between the plenum and cylinder head interface. The SRV position is controlled by a pneumatic/spring actuator and electronic solenoid valve. The Powertrain Control Module (PCM) compares the circuit feedback to a calibrated closed range when the circuit is de-energized or to a calibrated open range when the circuit is energized.