Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Diagnostic Trouble Code (DTC) Information
2004 Volvo V70 L5-2.4L VIN 64 B5244S6SECTION Diagnostic Trouble Code (DTC) Information
Diagnostic trouble code (DTC) information
Condition
When the engine speed (RPM) exceeds 500 rpm, the control module calculates that the camshaft position (CMP) sensor should make 5 flanker changes for each crankshaft revolution. 19 miscounts can be made within a 200 rpm interval before the engine control module (ECM) interprets it as a fault and ECM-300A is stored.
Substitute value
Uses the engine speed (RPM) sensor if it functions.
Possible source
Faulty signal
- Intermittent open-circuit in wiring or splices
- Incorrectly adjusted camshafts
- Defective camshaft position (CMP) sensor.
Fault symptom[s]
None.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.