codes p0401 and p0420 what else can i change to make this work

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what are the codes i have change these parts already still getting this codes

Dec 19, 2011

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What are the best Saturn repair shops?

RepairPal Certified shops can diagnose and repair your 1997 Saturn SW2. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.

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3 Replies

What are the best Saturn repair shops?

RepairPal Certified shops can diagnose and repair your 1997 Saturn SW2. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.

globalhelperon Dec 19, 2011

YOUR EGR SYSTEM HAS SERVERAL PARTS TO IT, WHAT PARTS HAVE YOU ALREADY CHANGED.ALSO YOUR PO420 CODE PERTAINS TO CATT EFF. BELOW THRESHOLD WHAT HAVE YOU CHANGED THERE

user91328on Dec 20, 2011

401 is an egr code that may be a clogged passage rather than a bad egr valve. stop throwing parts at it and have it cheked correctly. 420 is a bad cat. it must be replaced. Roy

Tuffy Tire & Auto Service Center - Grandview

4.7

(89)

2.39 mi

1524 W 5th Ave

Columbus, OH

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Opens 8:00 AM Mon

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Excite Auto Repair & Towing

4.4

(15)

5.94 mi

3430 Westerville Road

Columbus, OH

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All In Auto Service

4.7

(43)

6.56 mi

5200 Fisher Road

Columbus, OH

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Opens 8:00 AM Mon

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Tuffy Tire & Auto Service - Grove City

4.3

(532)

6.67 mi

2131 Stringtown Rd

Grove City, OH

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Opens 7:30 AM Mon

Call

Blackstone Complete Auto Care

(40)

6.77 mi

4800 Sinclair Road

Columbus, OH

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Opens 9:00 AM Mon

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Boyd's Tire & Service - Columbus

4.7

(198)

7.23 mi

5263 Godown Rd

Columbus, OH

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Opens 8:00 AM Mon

Call

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Tuffy Tire & Auto Service Center - Grandview

4.7

(89)

2.39 mi

1524 W 5th Ave

Columbus, OH

Closed

Opens 8:00 AM Mon

Call

Excite Auto Repair & Towing

4.4

(15)

5.94 mi

3430 Westerville Road

Columbus, OH

Closed

Opens 9:00 AM Mon

Call

All In Auto Service

4.7

(43)

6.56 mi

5200 Fisher Road

Columbus, OH

Closed

Opens 8:00 AM Mon

Call

Tuffy Tire & Auto Service - Grove City

4.3

(532)

6.67 mi

2131 Stringtown Rd

Grove City, OH

Closed

Opens 7:30 AM Mon

Call

Blackstone Complete Auto Care

(40)

6.77 mi

4800 Sinclair Road

Columbus, OH

Closed

Opens 9:00 AM Mon

Call

Boyd's Tire & Service - Columbus

4.7

(198)

7.23 mi

5263 Godown Rd

Columbus, OH

Closed

Opens 8:00 AM Mon

Call

See All 30 Locations

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codes p0401 and p0420 what else can i change to make this work

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Tuffy Tire & Auto Service Center - Grandview

Excite Auto Repair & Towing

All In Auto Service

Tuffy Tire & Auto Service - Grove City

Blackstone Complete Auto Care

Boyd's Tire & Service - Columbus

Tuffy Tire & Auto Service Center - Grandview

Excite Auto Repair & Towing

All In Auto Service

Tuffy Tire & Auto Service Center - Grandview

Excite Auto Repair & Towing

All In Auto Service

Tuffy Tire & Auto Service - Grove City

Blackstone Complete Auto Care

Boyd's Tire & Service - Columbus

Tuffy Tire & Auto Service Center - Grandview

Excite Auto Repair & Towing

All In Auto Service