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1997
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XK8 2D Convertible
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Diagnosis & Testing
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Pinpoint Test G: P0157, P0158
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G3: Check For O2 Sensor Failure
G3: Check For O2 Sensor Failure
With the conditions held as G2, suddenly decelerate to idle
Fig 1: Checking For O2 Sensor Failure (With Conditions Held as G2)
Courtesy of JAGUAR CARS, INC.
Has the voltage dropped to 400mV or less ?
Yes
: GO to
G4
No
: Renew O2 sensor and reconnect plug(s)
GO to
G6