P1DAC
Engine Speed Undetermined
P1DAC is an OBD-II diagnostic trouble code meaning: Engine Speed Undetermined. Common causes: malfunction of the crankshaft position sensor, damage to sensor wiring. Estimated repair cost: $17–89.
Symptoms
- Unstable engine operation
- Engine stalls at idle
- Problems starting the engine
- Reduced engine power
- The car goes into emergency mode
Causes
- Malfunction of the crankshaft position sensor
- Damage to sensor wiring
- Problems with the engine control unit (ECU)
- Camshaft position sensor malfunction
- Problems with the crankshaft gear
How to Fix
- Check crankshaft position sensor
- Inspect the sensor wiring for damage
- Check camshaft position sensor
- Diagnose the engine control unit
- Check the condition of the crankshaft gear
Related codes
FAQ
What does the P1DAC code mean?
P1DAC is an OBD-II diagnostic trouble code that indicates: Engine Speed Undetermined
What causes a P1DAC error code?
The most common causes of P1DAC include: Malfunction of the crankshaft position sensor; Damage to sensor wiring; Problems with the engine control unit (ECU); Camshaft position sensor malfunction.
How do I fix a P1DAC diagnostic trouble code?
To fix P1DAC: Check crankshaft position sensor. Inspect the sensor wiring for damage. Check camshaft position sensor. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P1DAC?
Do not drive — repair immediately
How much does it cost to fix P1DAC?
The estimated repair cost for P1DAC is $17–89. Actual cost depends on your vehicle, location, and labor rates.
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