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




Engine control module (ECM) checks the information from the knock sensor (KS) during normal driving conditions. Diagnostic trouble code (DTC) ECM-340A is stored in the engine control module (ECM) if the engine control module (ECM) registers that the signal from knock sensor (KS) deviates from the tolerance.

Substitute value
Knock control is disabled
ignition retarded for safety reasons

Possible source

Too little roar:
- contact resistance in connectors
- defective knock sensor (KS)

Possible source

Too much roar:
- contact resistance in connectors
- defective knock sensor (KS)

Fault symptom[s]
- poor performance.

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:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.