Is this an injector problem, I also have a p0340 which talks about a sensor.
Jul 15, 2009 at 7:48 PM
2003 GMC Envoy code p0172
2003 GMC ENVOY
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2003 GMC Envoy code p0172
Rich running condition could be caused by the following:
Bad O2 sensor, excessive fuel pressure (bad fuel pressure regulator or plugged return line), leaky fuel injectors, dirty air filter or restricted air inlet, or a defective coolant sensor that prevents the engine management system from going into closed loop mode.
Rich running condition could be caused by the following:
Bad O2 sensor, excessive fuel pressure (bad fuel pressure regulator or plugged return line), leaky fuel injectors, dirty air filter or restricted air inlet, or a defective coolant sensor that prevents the engine management system from going into closed loop mode.
Jul 15, 2009 at 7:59 PM