Maruti Suzuki Wagon R ECM Price, Part Numbers

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Maruti Suzuki Wagon R ECM Price, Part Numbers, Problems & Replacement Guide (2010–2025)

Looking for the Maruti Suzuki Wagon R ECM price, common ECM part numbers, failure symptoms, or replacement information? This complete guide covers Wagon R models from 2010 to 2025, including Petrol, CNG, Manual, and AMT variants.

You'll also learn about ECM functions, common problems, used and new ECM prices, part number references, troubleshooting steps, and installation tips.

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What Is an ECM?

The Engine Control Module (ECM) is the primary computer that manages the engine's operation. It receives signals from various sensors and controls fuel injection, ignition timing, idle speed, fuel pump operation, emissions, and overall engine performance.

If the ECM develops a fault, your vehicle may experience starting problems, poor performance, communication errors, immobilizer issues, or a Check Engine Light warning.

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ECM Full Form

ECM = Engine Control Module

It is also commonly referred to as:

• ECU (Engine Control Unit)
• Engine Computer
• Engine Management System (EMS)
• Powertrain Control Module (PCM)

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Maruti Suzuki Wagon R Models Covered

Wagon R (2010–2018)

• K10B Engine
• Petrol
• LPG
• CNG

Wagon R (2019–2025)

• K10B Engine
• K10C DualJet Engine
• K12N Engine
• Petrol
• CNG
• Manual Transmission
• AMT

The second-generation Wagon R was introduced in 2010 with the K10B engine, while the third-generation model launched in 2019 with updated BS6-compliant engine options and improved features.

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Maruti Suzuki Wagon R Used ECM Price

The price of a used ECM depends on several factors, including:

• Vehicle model year
• Engine type
• ECM manufacturer
• Immobilizer compatibility
• Condition of the ECM

Average Used ECM Price

₹4,000 – ₹6,000 INR

Average market price: ₹5,000 INR

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Maruti Suzuki Wagon R New ECM Price

A brand-new ECM generally costs between:

₹8,000 – ₹11,000 INR

The final price may vary depending on:

• Engine variant
• Software version
• CNG compatibility
• Availability

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Common Wagon R ECM Part Numbers

Model	Engine	Common ECM Part Numbers
2010–2013	K10B	33920M67K40, 33920M67K41
2013–2018	K10B	33920M67LC1, 33920M67LE, 33920M67L00
CNG Models	K10B CNG	33950M76M10, 33950M77PB0
2019–2021	K10B	33920M67LA2
2022–2025	K10C DualJet	33920M79F20, 33920M79F40
2022–2025	K12N DualJet	33920M80T00, 33920M80T10

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Common Symptoms of a Faulty ECM

• Engine cranks but does not start
• Fuel pump not working
• Check Engine Light stays OFF
• Engine misfiring
• Poor acceleration
• Engine jerking while driving
• Immobilizer warning
• No communication with diagnostic scanner
• Random engine shutdown

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How to Confirm an ECM Failure

Before replacing the ECM, always inspect the following:

• ECM fuse
• Main relay
• Battery voltage
• Ground connections
• Wiring harness
• ECM connectors
• Water damage or corrosion

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Can a Used ECM Be Installed?

Yes. However, some Wagon R models require:

• Immobilizer matching
• Key programming
• ECU coding
• ECM adaptation

Always verify the original ECM part number before installation.

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Common Causes of ECM Failure

• Reverse battery polarity
• Water damage
• Alternator overcharging
• Short circuit
• Poor grounding
• Connector corrosion
• Improper jump-starting

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Tips to Increase ECM Life

• Maintain a healthy battery.
• Repair charging system faults immediately.
• Keep ECM connectors clean and dry.
• Avoid reverse battery connections.
• Use proper jump-start procedures.
• Protect wiring harnesses from water and corrosion.

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Conclusion

The Maruti Suzuki Wagon R ECM is one of the most important electronic components in the vehicle. It manages fuel injection, ignition timing, emissions, and overall engine performance. Before replacing an ECM, always verify the correct part number, engine type, software version, and immobilizer compatibility to ensure proper installation and reliable operation.