What Does P1347 Mean?
P1347 indicates that the crankshaft and camshaft position sensor signals on bank 2 are out of their expected sequence. The ECU monitors the phase relationship between these sensors to verify valve timing on bank 2. When the signals do not correlate within the expected window, it typically points to a timing chain issue on the bank 2 side of a V-engine.
Safety Warning
Out-of-sequence cam/crank signals on bank 2 strongly suggest the timing chain has jumped. On interference engines, this can cause immediate valve-to-piston contact. Stop driving and tow the vehicle for inspection.
Common Causes
35%
Bank 2 timing chain has jumped one or more teeth
25%
Worn or stretched bank 2 timing chain
18%
Failed bank 2 timing chain tensioner or guide
12%
Camshaft position sensor bank 2 installation error or damage
10%
Bank 2 camshaft reluctor ring damage or contamination
Diagnostic Steps
1
Use a scan tool to read the bank 2 cam-crank correlation angle and compare it to the bank 1 reading. A significant deviation between banks indicates a bank 2-specific timing issue.
2
Listen for timing chain rattle or noise from the bank 2 side of the engine, particularly at cold startup. Compare to the bank 1 side.
3
Inspect the bank 2 timing chain and sprockets if accessible. Check the tensioner for proper operation and the guides for cracks or wear.
4
Verify the bank 2 CMP sensor is correctly installed and produces a clean signal by monitoring with an oscilloscope.
5
If the timing chain has jumped, identify the root cause (worn tensioner, broken guide) and replace all affected components. Re-time the bank 2 camshaft to specification.
Estimated Repair Cost
$400 - $2,000
Parts + labor, varies by vehicle and location
P1347 indicates that the crankshaft and camshaft position sensor signals on bank 2 are out of their expected sequence. The ECU monitors the phase relationship between these sensors to verify valve timing on bank 2. When the signals do not correlate within the expected window, it typically points to ...
The most common cause of P1347 (Bank2,Crankshaft-/Camshaft os.Sens.Sign. Out of Sequence) is: Bank 2 timing chain has jumped one or more teeth
Typical repair costs for P1347 range from $400 to $2,000, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Out-of-sequence cam/crank signals on bank 2 strongly suggest the timing chain has jumped. On interference engines, this can cause immediate valve-to-piston contact. Stop driving and tow the vehicle for inspection.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P1347 to identify the root cause.
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Quick Info
Category
Powertrain
System
Valve Timing / Engine Position Sensing
Difficulty
Type
Manufacturer
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