Suzuki Alto Fault Codes
You can find common Suzuki Alto 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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Suzuki Alto 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 Suzuki Alto has any recall notices on our sister site AutoRecalls.co, sorted by model year.View Suzuki Alto Recalls »
Common Alto Fault Codes
These are the most common Alto fault codes that people are searching for.
Catalyst System Efficiency Below Threshold (Bank 1)Learn More Fixes
Evaporative Emission Control System Purge Control Valve circuit MalfunctionLearn More
O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 1)Learn More Fixes
Vehicle Speed Sensor MalfunctionLearn More
System Too Lean (Bank 1)Learn More Fixes
Random/Multiple Cylinder Misfire DetectedLearn More Fixes
Intake Air Temperature Circuit High InputLearn More Fixes
Camshaft Position Sensor Circuit MalfunctionLearn More Fixes
Evaporative Emissions System Small Leak DetectedLearn More Fixes
System Gross Leak Evaporative EmissionLearn More Fixes
Exhaust Gas Recirculation Flow Insufficient DetectedLearn More Fixes
Control Module Long Term Memory Performance/ Immobilizer Code Words Do Not MatchLearn More
Knock Sensor 2 Circ. Short to GroundLearn More
Clutch Switch Circuit MalfunctionLearn More
Ignition Coil A Secondary Circuit MalfunctionLearn More
Immobilizer Code Word/ID Number Write FailureLearn More
SBDS Interactive CodesLearn More
Transmission Transfer Case Differential Lock-Up Feedback Switch Short Circuit To BatteryLearn More
Transmission 4-Wheel Drive Clutch Relay Open CircuitLearn More
Lamp Turn Signal Right Circuit OpenLearn More
Heated Oxygen Sensor (HO2S) Heater Circuit Low Voltage Bank 1 Sensor 1Learn More Fixes
Heated Oxygen Sensor (HO2S) Heater Circuit Low Voltage Bank 1 Sensor 2Learn More
Mass or Volume Air flow Circuit Range/Performance ProblemLearn More Fixes
Ignition Coil A Primary Circuit MalfunctionLearn More
Throttle/Pedal Position Sensor/Switch A / B Voltage CorrelationLearn More Fixes
O2 Sensor Circuit Malfunction (Bank 1 Sensor 1)Learn More Fixes
Exhaust Gas Recirculation Flow MalfunctionLearn More
Intake Air Temperature Circuit MalfunctionLearn More Fixes
Throttle Pedal Position Sensor/Switch A Circuit MalfunctionLearn More
Evaporative Emission Control System Leak DetectedLearn More Fixes
O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 2)Learn More Fixes
Throttle Actuator Control System Forced Limited PowerLearn More Fixes
Lost Communication With HVAC Control ModuleLearn More
SCP (J1850) Invalid or Missing Data for Primary IdLearn More
SCP (J1850) Invalid or Missing Data for Primary IdLearn More
Control Module Communication Bus "A" OffLearn More Fixes
Fuel Pump Speed Control Circuit MalfunctionLearn More
Ignition Coil - Cylinder 5 - Early Activation FaultLearn More
Top Dead Center Sensor 1 Intermittent Interruption (Honda, Acura)Learn More
Brake Switch Out Of Self Test RangeLearn More
Ignition Coil - Cylinder 2 - Early Activation FaultLearn More
Intake Camshaft Position Actuator Circuit / Open (Bank 1)Learn More Fixes
Intake Camshaft Position Timing - Over-Advanced (Bank 1)Learn More Fixes
Intake Camshaft Position Timing - Over-Retarded (Bank 1)Learn More Fixes
Exhaust Camshaft Position Actuator Circuit / Open (Bank 1)Learn More Fixes
Exhaust Camshaft Position Timing - Over-Advanced (Bank 1)Learn More Fixes
Crankshaft Position Camshaft Position Correlation Bank 1 Sensor ALearn More Fixes
Crankshaft Position Camshaft Position Correlation Bank 1 Sensor BLearn More Fixes
Heated Oxygen Sensor (HO2S) Heater Control Circuit Bank 1 Sensor 2Learn More Fixes
Mass or Volume Air Flow Circuit Low Voltage InputLearn More Fixes
Manifold Absolute Pressure/Barometric Pressure Circuit Range/Performance ProblemLearn More Fixes
Coolant Thermostat (Coolant Temp Below Thermostat Regulating Temperature)Learn More Fixes
O2 Sensor Circuit Low Voltage (Bank 1 Sensor 1)Learn More Fixes
O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 1)Learn More Fixes
O2 Sensor Circuit Low Voltage (Bank 1 Sensor 2)Learn More Fixes
O2 Sensor Circuit High Voltage (Bank 1 Sensor 2)Learn More Fixes
O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 2)Learn More Fixes
System Too Rich (Bank 1)Learn More Fixes
System Too Rich (Bank 2)Learn More Fixes
Cylinder 1 Misfire DetectedLearn More Fixes
Cylinder 2 Misfire DetectedLearn More Fixes
Cylinder 3 Misfire DetectedLearn More Fixes
Cylinder 4 Misfire DetectedLearn More Fixes
Cylinder 5 Misfire DetectedLearn More Fixes
Cylinder 6 Misfire DetectedLearn More Fixes
Knock Sensor 1 Circuit (Bank 2 or Single Sensor)Learn More Fixes
Knock Sensor 2 Circuit Low Input (Bank 2)Learn More Fixes
Crankshaft Position Sensor A Circuit MalfunctionLearn More Fixes
Camshaft Position Sensor Circuit Range/PerformanceLearn More Fixes
Catalyst System Efficiency Below Threshold (Bank 2)Learn More Fixes
Evaporative Emission Control System Incorrect Purge flowLearn More Fixes
Evaporative Emission Control System Vent Control Circuit MalfunctionLearn More Fixes
Evaporative Emission Control System Vent Valve/Solenoid Circuit MalfunctionLearn More Fixes
Fuel Level Sensor Circuit High InputLearn More Fixes
Evaporative Emission System High Purge FlowLearn More Fixes
- Manufacturer: Suzuki
About the Alto
Sold from the year 1979, the Alto is a small family car built by the Japanese automaker, Suzuki.
Also responsible for the Swift, Jimny and Vitara, Suzuki is still enjoying strong sales from the Alto although it has changed shape significantly.
Its first generation had three doors and folding rear seats allowing the little car to carry more cargo.
Quickly becoming a huge hit amongst buyers, Suzuki physically could not keep up with the demand, but despite this, towards the end of this era of Altos, it became the best-selling Kei car (beating the formerly popular Fonte).
A second generation had a style change with larger windows and a more slanted angular appearance.
Taken from the GM M-Platform (which it shared with the Suzuki Cultus), the Alto added a new engine to its range, including the turbocharged version.
Adding a four-wheel drive platform to the model, Suzuki created a number of high-performance vehicles which coincided with the external upgrade of the chassis.
Currently, the car is in its eighth generation and looks quite similar to its predecessors and is currently built upon the lightweight HEARTECT platform.
There are now five trim levels with four passenger vehicles, and one van, these are F, L, S, X and VP. Some common fault codes for the Alto are:
- P0420 – Showing a low catalyst system efficiency
- P0443 – A generic code showing that the ECM has registered a malfunction with the purge control valve.
- P0134 – There is an issue with the unit reading oxygen levels incorrectly
- P0500 – Showing a problem with the ‘vehicle speed sensor’ this is usually seen when the PCM picks up wrong speed readings.
- P0171 – The air/fuel mix in the engine is too lean, meaning too much car is circulating.