What Does P2618 Mean?
The PCM has detected a voltage level below normal specifications in the crankshaft position sensor output circuit. This indicates the output signal being sent to other modules is weaker than expected.
Safety Warning
Vehicle may experience no-start condition, stalling, or severe misfires. Can leave driver stranded in traffic.
Common Causes
35%
Short to ground in crankshaft position output wiring harness
30%
Weak or failing PCM output driver circuit
20%
Excessive resistance in output circuit due to corrosion or poor connections
15%
Low system voltage affecting output signal strength
Diagnostic Steps
1
Step 1: Inspect wiring harness and connectors for damage, chafing, or signs of shorting to ground
2
Step 2: Measure voltage on output circuit with key on, engine off and compare to specifications
3
Step 3: Check for voltage drop in output circuit under load conditions
4
Step 4: Verify battery voltage and PCM power/ground circuits are within specification
5
Step 5: Test PCM output driver with oscilloscope during cranking to verify proper signal amplitude
Estimated Repair Cost
$150 - $1,400
Parts + labor, varies by vehicle and location
The PCM has detected a voltage level below normal specifications in the crankshaft position sensor output circuit. This indicates the output signal being sent to other modules is weaker than expected.
The most common cause of P2618 (Crankshaft Position Signal Output Circuit Low) is: Short to ground in crankshaft position output wiring harness
Typical repair costs for P2618 range from $150 to $1,400, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Vehicle may experience no-start condition, stalling, or severe misfires. Can leave driver stranded in traffic.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P2618 to identify the root cause.
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Quick Info
Category
Powertrain
System
Engine Management/Ignition System
Difficulty
Type
Generic (SAE)
Recommended Tools
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