Silverado 2008

6.0L V8 VIN Y Auto 20

Print

Trouble Code: P2176



Minimum Throttle Position Not Learned

Possible Causes:



P2176
 
The ECM detects that both throttle position (TP) sensors were greater than a predetermined voltage during the minimum throttle learn procedure for greater than 2 s.
 

Trouble Code: P2266



Water in Fuel Sensor Circuit Low Voltage

Possible Causes:



The engine is running.
 
The WIF sensor voltage is less than 0.20 volt for more than 1 second.
 

Trouble Code: P2269



Water in Fuel

Possible Causes:



Water in fuel condition
 
WIF circuit short to ground in the harness
 
WIF sensor
 

Trouble Code: P2270



HO2S Signal Stuck Lean Bank 1 Sensor 2

Possible Causes:



P2270
 
The ECM does not detect an HO2S voltage greater than 810 mV before accumulated mass air flow exceeds 80 grams.
 

Trouble Code: P2271



HO2S Signal Stuck Rich Bank 1 Sensor 2

Possible Causes:



P2271
 
The ECM does not detect an HO2S voltage less than 100 mV before accumulated mass air flow exceeds 80 grams.
 

Trouble Code: P2272



HO2S Signal Stuck Lean Bank 2 Sensor 2

Possible Causes:



P0153
 
The ECM detects that the HO2S 1 rich-to-lean or lean-to-rich average response time is more than a calibrated value.
 
DTC P0133 sets within 100 seconds when the above condition is met.
 
P0154
 
The ECM detects that the HO2S 1 parameter is between 350-550 mV for 100 seconds.
 
The Throttle Position (TP) Indicated Angle parameter changes more than 5 percent, 1 time.
 
DTC P0154 sets within 100 seconds when the above conditions are met.
 
P0160
 
The ECM detects that the HO2S 1 parameter is between 410-490 mV.
 
The TP Indicated Angle parameter changes more than 5 percent 1 time.
 
DTC P0160 sets within 100 seconds when the above conditions are met.
 
P1153
 
The ECM detects that the HO2S 1 rich-to-lean counts, or the lean-to-rich counts are less than a calibrated value.
 
DTC P1153 sets within 100 seconds when the above condition is met.
 
P2272
 
The ECM detects that the affected sensor is below 730 mV.
 
DTC P2272 sets within 1 second when the above condition is met.
 
'
 
P2A04
 
The ECM detects that the HO2S 1 did not transition below 200 mV and above 730 mV during the passive test.
 
One of the following tests fail:
 
The Lean Intrusive Test detects that the sensor is more than 200 mV for 12 seconds.
 
The Rich Intrusive Test detects that the sensor is less than 730 mV for 12 seconds.
 
DTC P2A04 sets within 10 minutes when the above conditions are met.
 

Trouble Code: P2272



HO2S Signal Stuck Lean Bank 2 Sensor 2

Possible Causes:



P2272
 
The ECM does not detect an HO2S voltage greater than 810 mV before the accumulated mass air flow exceeds 80 grams.
 
DTC P2272 sets within 1 second when the above condition is met.
 

Trouble Code: P2273



HO2S Signal Stuck Rich Bank 2 Sensor 2

Possible Causes:



P0153
 
The ECM detects that the HO2S 1 rich-to-lean or lean-to-rich average response time is more than a calibrated value.
 
DTC P0133 sets within 100 seconds when the above condition is met.
 
P0154
 
The ECM detects that the HO2S 1 parameter is between 350-550 mV for 100 seconds.
 
The Throttle Position (TP) Indicated Angle parameter changes more than 5 percent, 1 time.
 
DTC P0154 sets within 100 seconds when the above conditions are met.
 
P0160
 
The ECM detects that the HO2S 1 parameter is between 410-490 mV.
 
The TP Indicated Angle parameter changes more than 5 percent 1 time.
 
DTC P0160 sets within 100 seconds when the above conditions are met.
 
P1153
 
The ECM detects that the HO2S 1 rich-to-lean counts, or the lean-to-rich counts are less than a calibrated value.
 
DTC P1153 sets within 100 seconds when the above condition is met.
 
P2272
 
The ECM detects that the affected sensor is below 730 mV.
 
DTC P2272 sets within 1 second when the above condition is met.
 
'
 
P2A04
 
The ECM detects that the HO2S 1 did not transition below 200 mV and above 730 mV during the passive test.
 
One of the following tests fail:
 
The Lean Intrusive Test detects that the sensor is more than 200 mV for 12 seconds.
 
The Rich Intrusive Test detects that the sensor is less than 730 mV for 12 seconds.
 
DTC P2A04 sets within 10 minutes when the above conditions are met.
 

Trouble Code: P2273



HO2S Signal Stuck Rich Bank 2 Sensor 2

Possible Causes:



P2273
 
The ECM does not detect an HO2S voltage less than 100 mV before the accumulated mass air flow exceeds 80 grams.
 
DTC P2273 sets within 1 second when the above condition is met.
 

Trouble Code: P244C



Catalyst Temperature Too Low During Regeneration

Possible Causes:



The ECM determines that the EGT sensor 1 is less than 75°C (167°F) of a calibrated threshold, during an active regeneration event.
 
The condition exists for greater than 5 minutes.
 

Trouble Code: P2453



Particulate Matter Trap Differential Pressure Sensor Signal Performance

Possible Causes:



Engine OFF, the ECM detects that the differential pressure is greater than or less than the calibrated threshold for 0.5 second.
 
OR
 
Engine running, the ECM detects that the differential pressure is greater than or less than the calibrated threshold for 1 second.
 
OR
 
The ECM detects that the differential pressure does not respond relative to an increase or decrease in exhaust flow for greater than 1 second.
 

Trouble Code: P2454



Diesel Particulate Filter Differential Pressure Sensor Circuit Low Voltage

Possible Causes:



P2454
 
The ECM detects that the exhaust pressure differential sensor voltage is less than 0.93V for 2 seconds.
 

Trouble Code: P2455



Diesel Particulate Filter Differential Pressure Sensor Circuit High Voltage

Possible Causes:



P2455
 
The ECM detects that the exhaust pressure differential sensor voltage is greater than 4.1V for 2 seconds.
 

Trouble Code: P2457



Exhaust Gas Recirculation (EGR) Cooling System Performance

Possible Causes:



The ECM detects that the temperature difference between both EGR temperature sensors is not within a calibrated range, for greater than 3 seconds. The difference can be from 1°C to 10°C depending on operating conditions.
 

Trouble Code: P2459



Diesel Particulate Filter Regeneration Too Often

Possible Causes:



The ECM detects that the average time between completed regenerations is less than 1 hour 10 minutes.
 

Trouble Code: P251A



Power Take-Off (PTO) Enable Switch Circuit

Possible Causes:



P251A
 
The PTOM detects a high voltage signal on one or more of the in-cab PTO switch circuits: SET -, RES +, 1 or 0.
 
The above condition is present for greater than a predetermined time threshold.
 
This code moves to history after 90 seconds.
 

Trouble Code: P251E



Power Take-Off (PTO) Engine Shutdown Control Circuit Low Voltage

Possible Causes:



P251E or P251F
 
The PTOM detects that the PTO engine shutdown signal circuit is above or below a predetermined voltage threshold.
 
The above condition is present for greater than a predetermined time threshold.
 

Trouble Code: P251F



Power Take-Off (PTO) Engine Shutdown Control Circuit High Voltage

Possible Causes:



P251E or P251F
 
The PTOM detects that the PTO engine shutdown signal circuit is above or below a predetermined voltage threshold.
 
The above condition is present for greater than a predetermined time threshold.
 

Trouble Code: P2534



Ignition 1 Switch Circuit Low Voltage

Possible Causes:



The TCM detects an open or short to ground on the Ignition 1 voltage circuit.
 

Trouble Code: P2534



Ignition 1 Switch Circuit Low Voltage

Possible Causes:



The TCM detects 2 volts or less on the ignition 1 voltage circuit at the TCM for 1.0 second or more.
 

Trouble Code: P253D



Power Take-Off (PTO) Relay Feedback Circuit High Voltage

Possible Causes:



The PTOM detects a high voltage signal at the PTO engage signal circuit.
 
The above condition is present continuously for greater than a predetermined time threshold.
 

Trouble Code: P2563



Turbocharger Boost Control Position Sensor Performance

Possible Causes:



The ECM detects that the difference between turbocharger actual vane position and the desired vane position is 15 percent less than or greater than a calibrated value for greater than 5 seconds.
 

Trouble Code: P2564



Turbocharger Boost Control Position Sensor Circuit Low Voltage

Possible Causes:



P2564
 
The ECM detects that the turbocharger vane position sensor voltage is less than 0.28 V for greater than 1 second.
 

Trouble Code: P2565



Turbocharger Boost Control Position Sensor Circuit High Voltage

Possible Causes:



P2565
 
The ECM detects that the turbocharger vane position sensor signal voltage is greater than 4.7 V for greater than 1 second.
 

Trouble Code: P258E



Power Take-Off (PTO) Enable Switch Performance

Possible Causes:



The PTOM detects a valid stuck signal on one or more of the PTO switch circuits: SET -, RES +, 1 or 0.
 
The above condition is present for greater than 90 seconds.
 

Trouble Code: P260A



Power Take-Off (PTO) Relay Control Circuit

Possible Causes:



The PTOM detects a fault on the PTO relay coil control circuit that is above or below a predetermined voltage threshold.
 

Trouble Code: P260B



Power Take-Off (PTO) Relay Control Circuit Low Voltage

Possible Causes:



The PTOM detects a fault on the PTO relay coil control circuit that is above or below a predetermined voltage threshold.
 

Trouble Code: P260C



Power Take-Off (PTO) Relay Control Circuit High Voltage

Possible Causes:



The PTOM detects a fault on the PTO relay coil control circuit that is above or below a predetermined voltage threshold.
 

Trouble Code: P260D



Power Take-Off (PTO) Engaged Indicator Control Circuit

Possible Causes:



The PTOM detects an invalid voltage signal at the PTO switch indicator control circuit.
 
The above condition is present continuously for greater than a predetermined time threshold.
 

Trouble Code: P2610



Control Module Ignition Off Timer Performance

Possible Causes:



P2610
 
The ignition off-timer is less than 0 second.
 
OR
 
The ignition off-timer is less than 5 seconds for more than 10 seconds.
 
OR
 
The ignition off-timer is unchanged for 60 seconds.
 
OR
 
The ignition off-timer is not incrementing in 1-second intervals.
 

Trouble Code: P2632



Fuel Pump Relay 2 Control Circuit

Possible Causes:



The control module detects that the commanded state of the driver and the actual state of the control circuit do not match.
 
The above condition is met for a minimum of 2.5 seconds.
 

Trouble Code: P2632



Fuel Pump Relay 2 Control Circuit

Possible Causes:



The ECM detects an incorrect voltage on the control circuit of the fuel pump relay.
 
The above condition exists for 1 second.
 

Trouble Code: P2635



Fuel Pump Flow Performance

Possible Causes:



This DTC sets when the FPCM detects a predetermined fuel pressure performance degradation between the desired fuel rail pressure and the current fuel rail pressure.
 

Trouble Code: P2636



Fuel Pump 2 Flow Insufficient

Possible Causes:



The ECM does not detect a change of 3 L (0.7925 gal), in both the primary and the secondary fuel level sensors, with the secondary pump commanded ON for 200 seconds.
 

Trouble Code: P2636



Fuel Pump 2 Flow Insufficient

Possible Causes:



The ECM detects a primary fuel level increase and a secondary fuel level decrease of less than 2.6 liters (0.70 gallons) each, within 120 seconds.
 

Trouble Code: P2670



Actuator Supply Voltage 2 Low

Possible Causes:



DTC P2670 sets when the TCM detects a low voltage condition, less than 6.0 volts, in 3 solenoids in the HSD2 circuit.
 

Trouble Code: P2671



Actuator Supply Voltage 2 High

Possible Causes:



DTC P2671 sets when the TCM detects greater than 6.0 volts at the HSD2 terminal prior to commanding HSD2 ON.
 

Trouble Code: P268C



Injector 1 Calibration Incorrect

Possible Causes:



The fuel injector calibration flow rate data is incorrect.
 

Trouble Code: P268D



Injector 2 Calibration Incorrect

Possible Causes:



The fuel injector calibration flow rate data is incorrect.
 

Trouble Code: P268E



Injector 3 Calibration Incorrect

Possible Causes:



The fuel injector calibration flow rate data is incorrect.
 

 
label.common.footer.alt.autozoneLogo