Crankshaft Position Signal Output Circuit/Open
What it means
P2617 means the ECM detected an open in the circuit that outputs the crankshaft-position (engine speed) signal — the reference the ECM shares with other modules for timing and RPM. Because this signal is tied to how the engine runs, a fault can cause hard starting, stalling, or hesitation, so it's worth diagnosing quickly even if the car still drives.
Can I keep driving? Often drivable, but because it involves the crank signal the engine can stall, misfire, or become hard to start — get it checked promptly and avoid long trips.
Real-world scan data
Figures reflect only diagnostic scans recorded through our own apps and tools. Cars are typically scanned because a symptom or warning light prompted it, so these counts describe our scan records — not the incidence of faults in any model, and not the quality, reliability, or safety of any vehicle. No comparison between manufacturers or models is implied. All trademarks belong to their respective owners; no affiliation or endorsement is implied.
Common symptoms
What you'll notice
- Check-engine light on
- Hard starting or intermittent no-start
- Engine stumble or stall while driving
- Hesitation or jerking during acceleration
- Erratic or dropping tachometer
Common causes
Most likely first
- Open or broken wire in the crankshaft-position signal output circuitLikely
- Corroded or loose connector on the circuit that shares the crank/RPM signal with another moduleCommon
- Failing crankshaft position sensorCommon
- Fault in the receiving module or its groundLess often
- Related mechanical timing issue (worn timing belt/chain)Less often
How to diagnose & fix
Work through it in order
- Read freeze-frame data and scan for companion crank/cam codes (P0335–P0339, P2618) to narrow the fault.
- Inspect the crank-signal output wiring and connectors for opens, corrosion, or backed-out pins; repair as needed.
- Check the crankshaft position sensor and its harness for damage.
- Verify grounds and connections at the module that receives the signal.
- If wiring is good, test the sensor; clear the code and road-test to confirm the signal holds.
FAQ
Quick answers
Is it safe to drive with P2617?+
Can I just clear P2617?+
Related codes
Read & clear P2617 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.