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Chevrolet Blazer Fault Codes


You can find common Chevrolet Blazer fault codes on this page that when clicked take you to a detailed description.

You can also type in the fault code you are getting below to find a more detailed description.

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Do you know the fault code already? Enter it in the box below and hit "Search Codes".

Chevrolet Blazer Recalls

When a car manufacturer detects a problem with a model they put out a recall notice and more often than not offer to fix the problem free of charge.

You can check to see if your Chevrolet Blazer has any recall notices on our sister site AutoRecalls.co, sorted by model year.

View Chevrolet Blazer Recalls ยป
Recall Notice Icon
Severity Icon 3/10

Error Icon P0440

Evaporative Emission Control System Malfunction

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Severity Icon 9/10

Error Icon P0300

Random/Multiple Cylinder Misfire Detected

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Severity Icon 7/10

Error Icon P0420

Catalyst System Efficiency Below Threshold (Bank 1)

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Severity Icon 3/10

Error Icon P0442

Evaporative Emission Control System Leak Detected

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Severity Icon 7/10

Error Icon P0171

System Too Lean (Bank 1)

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Severity Icon 9/10

Error Icon P0011

Intake Camshaft Position Timing - Over-Advanced (Bank 1)

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Severity Icon 6/10

Error Icon P0174

System Too Lean (Bank 2)

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Severity Icon 8/10

Error Icon P0306

Cylinder 6 Misfire Detected

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Severity Icon 4/10

Error Icon P0128

Coolant Thermostat (Coolant Temp Below Thermostat Regulating Temperature)

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Error Icon P0753

Shift Solenoid A Electrical/1-2 Shift Solenoid Circuit Electrical

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Error Icon P0410

Secondary Air Injection System Malfunction

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Severity Icon 3/10

Error Icon P0496

Evaporative Emission System High Purge Flow

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Error Icon P0155

O2 Sensor Heater Circuit Malfunction (Bank 2 Sensor 1)

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Error Icon P0506

Idle Control System RPM lower Than Expected

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Severity Icon 4/10

Error Icon P0101

Mass or Volume Air flow Circuit Range/Performance Problem

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Severity Icon 3/10

Error Icon P0507

Idle Control System RPM higher Than Expected

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Error Icon P0200

Injector Circuit Malfunction

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Error Icon P0777

Pressure Control Solenoid B Stuck On

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Severity Icon 5/10

Error Icon P0175

System Too Rich (Bank 2)

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Severity Icon 3/10

Error Icon P0441

Evaporative Emission Control System Incorrect Purge flow

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Severity Icon 3/10

Error Icon P0456

Evaporative Emissions System Small Leak Detected

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Severity Icon 8/10

Error Icon P0332

Knock Sensor 2 Circuit Low Input (Bank 2)

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Severity Icon 4/10

Error Icon P0455

System Gross Leak Evaporative Emission

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Error Icon P1810

Transmission Fluid Pressure Manual Valve Position Switch

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Error Icon P1345

SGC (Cam Position) Sensor Circuit Malfunction/ Crankshaft Position - Camshaft Position Correlation

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Error Icon P1626

Theft Deterrent Fuel Enable Signal Not Received/ B+ Supply To VCRM A/C Circuit Malfunction

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Error Icon P1860

TCC PWM Solenoid Circuit Electrical/ Transmission Transfer Case Contact Plate 'D' Short Circuit To Battery

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Error Icon P1631

Theft Deterrent Start Enable Signal Not Correct/ Main Relay Malfunction (Power Hold)

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Error Icon P1404

IAT - B Circuit Malfunction/ Exhaust Gas Recirculation Closed Position Performance

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Error Icon P1380

Misfire Detected - Rough Road Data Not Available

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Error Icon P1886

4X4 Initialization Failure

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Error Icon P1133

HO2S Insufficient Switching Sensor 1

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Error Icon U1041

SCP (J1850) Invalid or Missing Data for Vehicle Speed

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Severity Icon 9/10

Error Icon P2135

Throttle/Pedal Position Sensor/Switch A / B Voltage Correlation

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Severity Icon 3/10

Error Icon P0446

Evaporative Emission Control System Vent Control Circuit Malfunction

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Error Icon P305F

Dual Battery Control Module Performance

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Severity Icon 8/10

Error Icon P0301

Cylinder 1 Misfire Detected

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Severity Icon 4/10

Error Icon P0449

Evaporative Emission Control System Vent Valve/Solenoid Circuit Malfunction

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Severity Icon 8/10

Error Icon P0089

Fuel Pressure Regulator Performance

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Error Icon U1000

SCP (J1850) Invalid or Missing Data for Primary Id

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Error Icon U0107

Lost Communication With Throttle Actuator Control Module

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Severity Icon 9/10

Error Icon U0073

Control Module Communication Bus "A" Off

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Error Icon P1682

Charging System Voltage Too Low

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Error Icon P1516

IMRC Input Error (Bank 1)

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Error Icon P1101

MAF Sensor Out Of Self Test Range./KOER Not Able To Complete KOER Aborted

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Error Icon P1351

IDM Input Circuit Malfunction/ Ignition Coil Control Circuit High Voltage

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Error Icon P1811

Maximum Adaptive & Long Term Shift

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Severity Icon 7/10

Error Icon P0010

Intake Camshaft Position Actuator Circuit / Open (Bank 1)

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Severity Icon 9/10

Error Icon P0012

Intake Camshaft Position Timing - Over-Retarded (Bank 1)

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Severity Icon 7/10

Error Icon P0013

Exhaust Camshaft Position Actuator Circuit / Open (Bank 1)

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Severity Icon 8/10

Error Icon P0014

Exhaust Camshaft Position Timing - Over-Advanced (Bank 1)

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Severity Icon 8/10

Error Icon P0016

Crankshaft Position Camshaft Position Correlation Bank 1 Sensor A

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Severity Icon 8/10

Error Icon P0017

Crankshaft Position Camshaft Position Correlation Bank 1 Sensor B

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Severity Icon 4/10

Error Icon P0036

Heated Oxygen Sensor (HO2S) Heater Control Circuit Bank 1 Sensor 2

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Severity Icon 4/10

Error Icon P0102

Mass or Volume Air Flow Circuit Low Voltage Input

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Severity Icon 8/10

Error Icon P0106

Manifold Absolute Pressure/Barometric Pressure Circuit Range/Performance Problem

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Severity Icon 8/10

Error Icon P0113

Intake Air Temperature Circuit High Input

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Severity Icon 6/10

Error Icon P0131

O2 Sensor Circuit Low Voltage (Bank 1 Sensor 1)

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Severity Icon 7/10

Error Icon P0134

O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 1)

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Severity Icon 6/10

Error Icon P0135

O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 1)

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Severity Icon 4/10

Error Icon P0137

O2 Sensor Circuit Low Voltage (Bank 1 Sensor 2)

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Severity Icon 6/10

Error Icon P0138

O2 Sensor Circuit High Voltage (Bank 1 Sensor 2)

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Severity Icon 6/10

Error Icon P0141

O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 2)

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Severity Icon 5/10

Error Icon P0172

System Too Rich (Bank 1)

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Severity Icon 8/10

Error Icon P0302

Cylinder 2 Misfire Detected

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Severity Icon 8/10

Error Icon P0303

Cylinder 3 Misfire Detected

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Severity Icon 8/10

Error Icon P0304

Cylinder 4 Misfire Detected

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Severity Icon 8/10

Error Icon P0305

Cylinder 5 Misfire Detected

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Severity Icon 3/10

Error Icon P0325

Knock Sensor 1 Circuit (Bank 2 or Single Sensor)

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Severity Icon 8/10

Error Icon P0335

Crankshaft Position Sensor A Circuit Malfunction

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Severity Icon 6/10

Error Icon P0341

Camshaft Position Sensor Circuit Range/Performance

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Severity Icon 7/10

Error Icon P0401

Exhaust Gas Recirculation Flow Insufficient Detected

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Severity Icon 7/10

Error Icon P0430

Catalyst System Efficiency Below Threshold (Bank 2)

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Severity Icon 5/10

Error Icon P0463

Fuel Level Sensor Circuit High Input

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Chevrolet Blazer Image

About the Blazer

The modern version of the Blazer first came to market in 2019. Of course, there has been only a single generation released since then. To stay up to date, Chevrolet has made minor changes to the model each year since its release.

The Blazer is currently the middle of the Chevy SUV lineup. It is considered the larger version of offerings like the Chevrolet Equinox, while remaining significantly smaller than the larger models like the Chevrolet Tahoe.

Competition in the mid-size crossover class has become very tough, which means that the model rivals the likes of the Ford Edge, Honda Passport, and Hyundai Santa Fe. However, there are many more.

One of the most commonly reported issues for the Blazer is P0440. This code indicates that there is a malfunction somewhere in the evaporative emissions control (EVAP) system.

It is important for owners to look for any other codes that relate to the EVAP system before tackling this code as they can very well be the cause.

Another problem that has been reported commonly is P0300, which is logged when multiple random misfires have been detected.

Similar to the previous code, fixing this issue typically requires owners to first address any other codes that could potentially cause misfires to occur in multiple cylinders. Owners have also reported that installing new ignition coil packs is one of the best things to try first.

Another common issue that the model has faced is P0420, which indicates that the catalytic converter is likely failing.

In most cases, this will be the result of wear over mileage. However, it is also possible that this be caused by failing oxygen sensors found before and after the catalytic converter.