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Home >> Toyota >> 1994 >> Land Cruiser >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes >> Trouble Code Charts >> DTC 52 - No. 1 Knock Sensor Signal
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DTC 52 - No. 1 Knock Sensor Signal

DTC 52 is caused by a loss of No. 1 (front) knock sensor signal to ECM for 6 crank revolutions with engine speed at 1600-2000 RPM. Check for open short in No. 1 knock sensor circuit, a loose knock sensor or faulty ECM.

NOTE: Diagnostic chart is not available from manufacturer.