P1399 JEEP Wheel Speed Sensor 2, G-Sensor Circuit Intermittent

P1399 JEEP Wheel Speed Sensor 2, G-Sensor Circuit Intermittent

Possible causes
– Valve clearance out of range
– Blocked EGR (exhaust gas recirculation) Passages

Tech description
Adjusting the valves will usually fix this problem.
What about the obd code?
The control module monitors the crankshaft speed and has detected a misfire condition
Symptoms
Engine Light ON (or Service Engine Soon Warning Light)
– Lack/loss of power
– Hard start
– Engine hesitation
P1399 JEEP Description

When a misfire occurs, engine speed will fluctuate. If the engine speed fluctuates enough to cause the Crankshaft Position (CKP) sensor signal to vary, the Engine Control Module (ECM) can determine that a misfire is occurring.

– Valve clearance out of range

JEEP Vehicle:JEEP Commander,JEEP Compass,JEEP Grand Cherokee,JEEP Liberty,JEEP Patriot,JEEP Wrangler,JEEP Wrangler Unlimited,

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