Silverado 2008

5.3L V8 VIN J Auto 23

Print

Trouble Code: P2271



HO2S Signal Stuck Rich (Bank 1 Sensor 2)

Possible Causes:



Collapsed air intake duct
 
Restricted air filter element
 
Excessive fuel in the crankcase
 
Fuel contamination
 
Rich injectors
 
Engine mechanical conditions
 
Restricted exhaust system
 
Faulty HO2S
 
ECM has failed
 

Trouble Code: P2272



HO2S Signal Stuck Lean (Bank 2 Sensor 2)

Possible Causes:



Water intrusion in the HO2S harness connector
 
Signal circuit terminal B for a short to ground
 
Low fuel system pressure
 
Lean fuel injectors
 
Fuel that is contaminated
 
Vacuum hoses for splits, kinks, and proper connection
 
Air intake system after the Mass Air Flow (MAF) sensor for vacuum leaks
 
Exhaust system leaks
 
Contaminated HO2S - Silicon
 
Engine mechanical condition
 
Faulty HO2S
 
ECM has failed
 

Trouble Code: P2273



HO2S Signal Stuck Rich (Bank 1 Sensor 2)

Possible Causes:



Collapsed air intake duct
 
Restricted air filter element
 
Excessive fuel in the crankcase
 
Fuel contamination
 
Rich injectors
 
Engine mechanical conditions
 
Restricted exhaust system
 
Faulty HO2S
 
ECM has failed
 

Trouble Code: P2300



Ignition Coil 1 Control Circuit Low Voltage

Possible Causes:



Ignition Coil circuit for a short to ground or an open/high resistance
 
Inition Coil circuit for a short to voltage
 
Ignition coil has failed
 
ECM has failed
 

Trouble Code: P2301



Ignition Coil 1 Control Circuit High Voltage

Possible Causes:



Ignition Coil circuit for a short to ground or an open/high resistance
 
Inition Coil circuit for a short to voltage
 
Ignition coil has failed
 
ECM has failed
 

Trouble Code: P2303



Ignition Coil 2 Control Circuit Low Voltage

Possible Causes:



Ignition Coil circuit for a short to ground or an open/high resistance
 
Inition Coil circuit for a short to voltage
 
Ignition coil has failed
 
ECM has failed
 

Trouble Code: P2304



Ignition Coil 2 Control Circuit High Voltage

Possible Causes:



Ignition Coil circuit for a short to ground or an open/high resistance
 
Inition Coil circuit for a short to voltage
 
Ignition coil has failed
 
ECM has failed
 

Trouble Code: P2306



Ignition Coil 3 Control Circuit Low Voltage

Possible Causes:



Ignition Coil circuit for a short to ground or an open/high resistance
 
Inition Coil circuit for a short to voltage
 
Ignition coil has failed
 
ECM has failed
 

Trouble Code: P2307



Ignition Coil 3 Control Circuit High Voltage

Possible Causes:



Ignition Coil circuit for a short to ground or an open/high resistance
 
Inition Coil circuit for a short to voltage
 
Ignition coil has failed
 
ECM has failed
 

Trouble Code: P2309



Ignition Coil 4 Control Circuit Low Voltage

Possible Causes:



Ignition Coil circuit for a short to ground or an open/high resistance
 
Inition Coil circuit for a short to voltage
 
Ignition coil has failed
 
ECM has failed
 

Trouble Code: P2310



Ignition Coil 4 Control Circuit High Voltage

Possible Causes:



Ignition Coil circuit for a short to ground or an open/high resistance
 
Inition Coil circuit for a short to voltage
 
Ignition coil has failed
 
ECM has failed
 

Trouble Code: P2312



Ignition Coil 5 Control Circuit Low Voltage

Possible Causes:



Ignition Coil circuit for a short to ground or an open/high resistance
 
Inition Coil circuit for a short to voltage
 
Ignition coil has failed
 
ECM has failed
 

Trouble Code: P2313



Ignition Coil 5 Control Circuit High Voltage

Possible Causes:



Ignition Coil circuit for a short to ground or an open/high resistance
 
Inition Coil circuit for a short to voltage
 
Ignition coil has failed
 
ECM has failed
 

Trouble Code: P2315



Ignition Coil 6 Control Circuit Low Voltage

Possible Causes:



Ignition Coil circuit for a short to ground or an open/high resistance
 
Inition Coil circuit for a short to voltage
 
Ignition coil has failed
 
ECM has failed
 

Trouble Code: P2316



Ignition Coil 6 Control Circuit High Voltage

Possible Causes:



Ignition Coil circuit for a short to ground or an open/high resistance
 
Inition Coil circuit for a short to voltage
 
Ignition coil has failed
 
ECM has failed
 

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:



Voltage and ground inputs to the ECM
 
If DTC P0602 is set, attempt to program the ECM before replacing the ECM. If DTC P0602 resets, replace the ECM.
 

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.
 

 
label.common.footer.alt.autozoneLogo