Open or damaged wire in the crankshaft position signal output circuit between the PCM and the receiving module; Corroded or loose electrical connector at the PCM or at the crankshaft position sensor; Failed crankshaft position sensor or its internal output driver; Faulty PCM driver circuit for the crankshaft position output; Aftermarket alarm or remote start wiring that has tapped into or damaged the crankshaft signal wire; Poor ground connection at the PCM or engine block causing reference voltage loss

DTC codes / P26xx · Computer and output circuits / P2617

P2617Crankshaft Position Signal Output Circuit/Open

Q: What does code P2617 mean?

Crankshaft Position Signal Output Circuit/Open. P2617 indicates that the powertrain control module (PCM) has detected an open circuit or abnormal voltage on the crankshaft position signal output circuit, which is the path the PCM uses to send a reference signal to other modules or systems. The PCM monitors this output circuit and sets the code when the expected voltage or signal is missing, often resulting in an engine that cranks but does not start or runs poorly.

P2617 indicates that the powertrain control module (PCM) has detected an open circuit or abnormal voltage on the crankshaft position signal output circuit, which is the path the PCM uses to send a reference signal to other modules or systems. The PCM monitors this output circuit and sets the code when the expected voltage or signal is missing, often resulting in an engine that cranks but does not start or runs poorly.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaComputer and output circuits

Symptoms you may notice

Engine cranks but does not start or may stall immediately after starting
Intermittent stalling while driving or at idle
Rough running or misfire due to lost crankshaft position reference
Tachometer may read zero or fluctuate erratically
Often no symptoms besides the warning light if the fault is only in the output circuit to another module

Common causes, most likely first

Open or damaged wire in the crankshaft position signal output circuit between the PCM and the receiving module
Corroded or loose electrical connector at the PCM or at the crankshaft position sensor
Failed crankshaft position sensor or its internal output driver
Faulty PCM driver circuit for the crankshaft position output
Aftermarket alarm or remote start wiring that has tapped into or damaged the crankshaft signal wire
Poor ground connection at the PCM or engine block causing reference voltage loss

How to diagnose and fix it

Inspect the crankshaft position sensor and its connector for physical damage, corrosion, or loose pins
Check the wiring harness between the sensor and PCM for chafing, breaks, or pinched sections, especially near hot or moving components
Measure resistance and continuity of the signal output wire from the sensor connector to the PCM connector
Verify the sensor receives proper power and ground, and check for a clean ground at the PCM
Use a scan tool to monitor crankshaft position signal live data while cranking or wiggling the harness to catch intermittent opens
If the circuit tests good, substitute a known-good crankshaft position sensor to rule out a failing sensor
If all external circuits and the sensor are verified good, diagnose the PCM output driver or replace the PCM as a last resort

What the output circuit really does

P2617 is often set by a problem in the output side of the crankshaft signal, not the sensor input side, so replacing the sensor without testing the output wire can be a wasted repair.
A common missed cause is an aftermarket remote starter or alarm that has spliced into the crankshaft signal wire, creating a high-resistance or intermittent connection.
Some vehicles will run normally with this code because the output signal is only used by a secondary module such as the transmission control module or instrument cluster, so the engine may start fine.
A weak or failing crankshaft position sensor can produce an output signal that is present but distorted, setting P2617 without a complete open circuit.
Corrosion inside a connector can create an open circuit only when the engine bay is hot or wet, leading to intermittent no-start conditions that do not appear during a cold shop test.

Can I keep driving with P2617?

If the engine starts and runs normally, you can drive the vehicle to a repair shop, but avoid long trips or heavy load because the fault may cause an unexpected stall. If the engine cranks but does not start or stalls repeatedly, do not drive and have the vehicle towed to prevent a safety hazard.

Tools that help

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Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.