What does the p0151 code mean on a Chevy?

What does the p0151 code mean on a Chevy?

The Powertrain Control Module (PCM) monitors the HO2S voltage for being fixed below a predetermined voltage. If the PCM detects the voltage is below a predetermined voltage, the P0151 code will set. The Powertrain Control Module ( PCM) supplies a voltage of about 450 mV between the HO2S high and low signal circuits.

What are the p0141 and p0161 oxygen sensor codes?

P0161: HO2S Heater Performance Bank 2 Sensor 2. Remember, these downstream oxygen (O2) sensors are also known as: post catalytic converter oxygen sensors or Rear oxygen sensors. Before you start testing/troubleshooting Codes P0141 and/or P0161, I highly recommend that you take a look at the following oxygen sensor test primer:

What’s the trouble code on my Chevy Silverado?

1996 Chevy Silverado, V8, 5.7L, 130k miles The engine runs and idles ok. But when I accelerate hard, it lacks power at higher RPM (5000). At this point, the dummy light starts blinking (according to the manual it means misfire) and then goes steady after normal driving. The codes are P0131, P015…

What causes a car to have a p0151 code?

P0151 CHEVROLET Possible Causes. Faulty Front Heated Oxygen Sensor Bank 2. Front Heated Oxygen Sensor Bank 2 harness is open or shorted. Front Heated Oxygen Sensor Bank 2 circuit poor electrical connection. Inappropriate fuel pressure. Faulty fuel injectors. Intake air leaks may be faulty. Exhaust gas leaks.

What causes a p0154 code on Bank 2?

Potential causes of a P0154 code include: Faulty bank 2,1 Oxygen sensor. Holes in exhaust near oxygen sensor. Short to voltage or ground on signal circuit. Open or high resistance in signal circuit. Wiring harness chafing/rubbing on exhaust components. Water/oil intrusion at O2 sensor connector.

Where is the trouble code on a GMC?

When retrieving GMC trouble codes with an OBD II scan tool, proceed as follows: 1. Connect scan tool to the 16-pin data link connector (DLC) located underneath the steering column. The connector may have a removable cover. 2. Turn the ignition on.

What does the p0154 sensor tell the PCM?

It basically informs the PCM (Powertrain Control Module) of oxygen content of the exhaust. The PCM then uses this information to regulate fuel into the engine and maintain proper air:fuel ratio. It is a four wire sensor, with the PCM providing a reference/signal voltage of about half a volt (0.5v) to the sensor.