P1004 JEEP Possible Causes
- Faulty short runner valve assembly
- Short runner valve circuit open or shorted
- Poor electrical connection in short runner valve circuit
- Faulty Powertrain Control Module (PCM)
How is JEEP P1004 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.
Possible Symptoms
Illuminated engine light (or service engine soon warning light)
P1004 JEEP Meaning
The SRV (Short Runner Valve) system is used to improve engine performance. The SRV system allows intake boost air to bypass the long runner slides 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.