2001 Injector Problems – Symptoms, Causes & Fixes

Engine: 2001 31 compatible injectors From £100

Common Injector Failures on the 2001

The 2001 engine uses high-pressure common rail diesel injection. Over time, injector nozzles wear, seals degrade, and internal components lose calibration. This leads to a range of drivability symptoms that worsen if left unaddressed. We stock 31 tested replacement injectors for this engine from Bosch.

Vehicles fitted with the 2001 include models from AUDI, Audi. If you are experiencing any of the symptoms below, your injectors may need testing or replacement.

Symptoms of Injector Failure

Related Fault Codes

P0201 P0202 P0203 P0204 P0263 P0266 P0269 P0087 P0089 P0300

How to Test 2001 Injectors

Leak-off test: Connect clear hoses to the injector return lines and compare fuel volumes at idle. The injector returning the most fuel is likely worn.

Correction values: Use a scan tool to read injector correction (IMA) values. Readings beyond ±3 mg/stroke indicate wear.

Resistance check: Measure resistance across the injector connector pins with a multimeter. Compare to manufacturer specs.

Complete Testing Guide Leak-Off Test Guide

2001 Injector Replacement Cost

Parts (per injector)

£100–£100

Labour

£150–£400

Total (per injector)

£250–£500

Full replacement cost guide

Compatible Injectors for the 200131 found

Most Common Injector Part Numbers for 2001 Engine

Related Cross Reference Numbers for 2001

038130073BA 038130079F 1253765 3M219A543AA

Vehicles Using the 2001 Engine

Audi A62001

AUDI A62001

Related Engine Codes

4B2 4B5

Frequently Asked Questions

What are common injector problems on the 2001 engine?

The 2001 engine commonly suffers from injector seal failure, nozzle wear causing poor spray patterns, and back-leak issues. Symptoms include rough idle, black or white exhaust smoke, hard starting, and increased fuel consumption. These issues typically appear after 100,000–150,000 miles.

How much does it cost to replace injectors on a 2001 engine?

A remanufactured injector for the 2001 engine typically costs £100–£100 per injector. Labour adds £150–£400 depending on accessibility. We found 31 compatible injectors for this engine.

Which vehicles use the 2001 engine?

The 2001 engine is found in vehicles from AUDI, Audi. Common models include AUDI A6, Audi A6.

How do I test the injectors on a 2001 engine?

Perform a leak-off test by connecting clear hoses to each injector return line and comparing fuel volumes at idle. You can also check injector correction values with a diagnostic scan tool or measure electrical resistance with a multimeter.

Injector Compatibility Checker

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Need a Replacement 2001 Injector?

We stock 31 tested replacement injectors for the 2001 engine. All remanufactured, bench-tested, and supplied with a 12-month warranty.

View All Injectors Replacement Cost Guide Call 020 3355 6581