How to fix p1391 code on Jeep Wrangler?

Fix & Repair a P1391 Code on a Jeep Wrangler, Cherokee or Similar – YouTube P1391 CHRYSLER – Intermittent Loss of CMP or CKP Usually paired with a check engine light on. Crank Position Sensor or Cam Position Sensor intermittent failu… P1391 CHRYSLER – Intermittent Loss of CMP or CKP Usually paired with a check engine light on.

Why does my Jeep Wrangler have hard start condition?

I did have an issue once before where I changed the fuel pump assembly and the new gasket that came with it was faulty. However, since then, another new pump and gasket have been in the jeep for 3 months and the hard start condition just appeared. I do not have a CEL on.

What causes a Jeep Wrangler to run rough?

If its running rough from the get go its less likely to be a sensor issue and more likely to be a physical one, if its something that shows up once your warmed up its more likely to be computer or sensor related. I haven’t pulled the fuel rail yet to check injectors.

How to get gas out of a Jeep Wrangler?

6) once the fuel rail is separated from the manifold there are clips securing each injector into the rail, remove the clips and you can pull the injectors out. – Put an old towel down under the rail to collect gas as the rail should be full. I remove injector 6 first and elevate the rear, then remove 1 to let the fuel run out.

How to check the p1391 code test procedure?

Loosen the distributor enough to allow easy rotation and turn it clockwise as far as the hold-down will allow. Now monitor the voltmeter and rotate it back CCW until the voltage state toggles. That’s the point to lock the distributor down. If you go past, follow the same procedure as at the crank… back the distributor up and start over.

What kind of Dakota is the p1391 code for?

IT IS A 2001 DAKOTA 3.9 STANDARD . IT IS RANDOM, NOT TEMP RELATED.I HAVE WIGGLED ALL WIRES BETWEEN BOTH SENSORS ,AND ECM. Thanks. The P1391 code can be set for a number of reasons, unfortunately. You’ve already replaced the two sensors, so they shouldn’t be a problem at this point.

Are there any 5.14 volts in my p1391?

HI ED, I LOOKED AT ALL WIRING,AND CONNECTIONS, THERE IS NO SIGN OF CHAFFING OR COROSION. 5.14 VOLTS AT BOTH SENSORS AT ALL TIMES. I OHM TESTED ALL GROUND WIRES BACK TO THE BATTERY.

What is the meaning of the error code p1391?

Definition. Error Code P1391 happens when the PCM (powertrain control module, also known as ECM or engine control module in other vehicle makes) has detected that the actual position of the CMP disagrees with its expected level as set by the manufacturer.

What causes a bad CKP signal on a p1391 Jeep?

P1391 JEEP Possible Causes Faulty Crankshaft Position Sensor (CKP) Crankshaft Position Sensor (CKP) harness is open or shorted Crankshaft Position Sensor (CKP) circuit poor electrical connection Timing belt or chain stretched or jumped Faulty Camshaft Position (CMP) Sensor

When does the diagnostic trouble code ( DTC ) set?

The Diagnostic Trouble Code (DTC) will set when the PCM detects the actual Camshaft Position Sensor position disagreed with the expected Camshaft Position Sensor level. Need more information on how to fix the P1391 JEEP code?

What to look for in a p1391 Dodge?

Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins. The cost of diagnosing the P1391 DODGE code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city.

What does the diagnostic trouble code p1391 mean?

P1391 DODGE Meaning The Powertrain Control Module (PCM) monitors the Camshaft Position Sensor (CMP) Or Crankshaft Position Sensor (CKP) Signal. The Diagnostic Trouble Code (DTC) will set when the PCM detects the actual Camshaft Position Sensor position disagreed with the expected Camshaft Position Sensor level.

How much does it cost to repair a p1391 Jeep?

The cost of diagnosing the P1391 JEEP code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour. The Engine Control Module ( ECM) detected the actual Camshaft Position Sensor (CMP) position disagreed with the expected CMP level.

How to fix p1391 code on Jeep Wrangler?