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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-2100DIAGNOSTIC 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- 2100 is stored if the engine control module (ECM) registers that the current from the heated oxygen sensor (HO2S) deviates from 0 mA excessively (with " even driving" the current should be around 0 mA (lambdalambda =1).

Substitute value
Fuel trim shut off.

Possible source

Too high (positive) current:
- short-circuit to ground in the signal cable
- defective heated oxygen sensor (HO2S)
- defective IC circuit (in engine control module (ECM)).

Too low (negative) current:
- short-circuit to supply voltage in the signal cable
- defective heated oxygen sensor (HO2S)
- defective IC circuit (in engine control module (ECM)).

Fault symptom[s]
None

RENDER: 1.0x

NO RELATED

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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.