P0017

DTC P0017: Crankshaft/camshaft
(exhaust) Position Sensor Phase Problem

TECHNICAL DESCRIPTION

- The ECM checks the variable valve timing system for malfunction.

DESCRIPTIONS OF MONITOR METHODS

The close timing of the exhaust valve is faster or slower than the specified value.

MONITOR EXECUTION

Continuous

MONITOR EXECUTION CONDITIONS (Other monitor and Sensor)

Other Monitor (There is no temporary DTC stored in memory for the item monitored below)

- Not applicable
Sensor (The sensor below is determined to be normal)

- Camshaft position sensor
- Crankshaft position sensor
- Engine coolant temperature sensor
- Throttle position sensor
- Engine oil control valve

DTC SET CONDITIONS

Logic Flow Chart





Check Conditions

- Engine speed is between 594 r/min and 1,500 r/min.
- Engine coolant temperature is between 20°C (68°F) and 88°C (190°F).
- Exhaust engine oil control valve is "OFF".
- 1 second has passed after the above mentions have been met.
Judgment Criterion

- The close timing of the exhaust valve is less than -4.7 degrees (ATDC) for 10 seconds.
or

- The close timing of the exhaust valve is more than 8.4 degrees (ATDC) for 10 seconds.

FAIL-SAFE AND BACKUP FUNCTION

- None

OBD-II DRIVE CYCLE PATTERN

Refer to Diagnostic Function - OBD-II Drive Cycle - Pattern 20 Monitors, Trips, Drive Cycles and Readiness Codes .

TROUBLESHOOTING HINTS (The most likely causes for this code to be set are:)

- Timing chain in out of place.
- Exhaust variable valve timing sprocket tooth coming off.
- Exhaust engine oil control valve failed.

DIAGNOSIS

Required Special Tool:

- MB991958: Scan Tool (M.U.T.-III Sub Assembly)
- MB991824: V.C.I.
- MB991827: USB Cable
- MB991910: Main Harness A

STEP 1. Check the exhaust engine oil control valve.

- Refer to, Engine oil control valve check.

Q. Is the check result normal?

YES Go to Step 2.
NO Replace the exhaust engine oil control valve. Then initialize the learning value for the elongation of the timing chain. Timing Chain Learned Value Reset. Then go to Step 3.
STEP 2. Check timing mark on the timing chain.

Q. Is timing chain in out of place?

YES Repair it. Then initialize the learning value for the elongation of the timing chain. Timing Chain Learned Value Reset.
Then go to Step 3.
NO
Initialize the learning value for the elongation of the timing chain. Timing Chain Learned Value Reset . Then go to Step 3.

STEP 3. Test the OBD-II drive cycle.

(1)Carry out a test drive with the drive cycle pattern. Refer to Diagnostic Function - OBD-II Drive Cycle - Pattern 20 Monitors, Trips, Drive Cycles and Readiness Codes.

(2)Check the diagnostic trouble code (DTC).

Q. Is DTC P0017 set?

YES Retry the troubleshooting.
NO The inspection is complete.