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HOMESERVICE MANUALSVOLVO2003V70 2.4 L5-2.4L VIN 61 B5244SREPAIR AND DIAGNOSISA L L DIAGNOSTIC TROUBLE CODES ( DTC )TESTING AND INSPECTIONMANUFACTURER CODE CHARTSECM CODES (ENGINE CONTROL MODULE)ECM-3400DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION
2003 Volvo V70 2.4 L5-2.4L VIN 61 B5244S

Diagnostic Trouble Code (DTC) Information

2003 Volvo V70 2.4 L5-2.4L VIN 61 B5244SSECTION Diagnostic Trouble Code (DTC) Information





Diagnostic trouble code (DTC) information

Condition




Diagnostic trouble code (DTC) ECM-3400 is stored if the engine control module (ECM) registers that the signal from the knock sensor (KS) is higher than 3.75 V or below 1.25 V for a couple of seconds.

Substitute value
- knock control is disabled
- ignition retarded for safety reasons.

Possible source

Signal too high:
- short-circuit to supply voltage in the signal cable
- open-circuit in signal cable
- loose connections in connector
- defective knock sensor (KS).

Signal too low:
- short-circuit to ground in the signal cable
- defective knock sensor (KS).

Fault symptom[s]
Poor performance due to retarded ignition.

RENDER: 1.0x

NO RELATED

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Stop DIY work and contact a certified mechanic immediately if any of the following apply:

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  • • 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.