BRAND NEW *OEM Quality* 2.5 Bar boost pressure sensor to suit Volkswagen Caddy Golf Jetta Polo and Caravelle with 1.8T 2.0T and TDI engines.

The Golf Mk4 and Mk5 1.8T are the highest-volume application for this sensor - MAP sensor failure is a routine service interval item on Australian-delivered examples. This direct replacement covers the full VW passenger and light-commercial range. Shipped from Cranbourne VIC.

TO SUIT

Suits Volkswagen Golf Mk4 with 1.8T (AGU AUM AWP AUQ) and Golf Mk5 with 1.8T (BWA BZB). Also suits Jetta 1K with 1.4 TSI (CAVD) and 1.8 TSI (CDAA CDAB) and Polo 9N and 6R with 1.4 TSI (CAVD CHHB). The Caravelle T5 with 1.9 TDI (AXB BRR) and Jetta 2.0 TDI (AZV BMM) complete the fitment range. The Golf Mk5 BKD and AZV 2.0 TDI shows a distinct failure pattern - normal around town but limp mode during extended highway overtaking manoeuvres. Confirm OEM 038906051B before ordering.

OEM PART NUMBERS

038906051B
03G906051D
038906051D
PF100636PB

OTHER PART NUMBERS

NTY: ECM-AU-000
VEMO: V10-72-1039
BOSCH: 0261230266
BOSCH: 0281002399
HELLA: 6PP009400-471
WALKER PRODUCTS: 225-1094

PACKAGE INCLUDES

1 x OEM Quality 2.5 Bar Boost Pressure MAP Sensor (4-Pin plug)

ABOUT THIS SENSOR

On the Golf Mk4 1.8T the MAP sensor is one of the first sensors replaced during fault diagnosis - the AGU and AUM engines are well documented in Australian VW communities for MAP sensor failures between 120000 and 180000 km. The K03 turbo runs relatively low boost but the sensor diaphragm fatigues over time from repeated pressure cycles.

On the Golf Mk5 2.0 TDI the MAP sensor failure pattern is distinct - the BKD and AZV engines produce a very recognisable pattern where the car runs normally around town but enters limp mode during extended highway overtaking. This contrasts with the 1.8T where limp mode occurs more randomly and at lower speeds.

COMMON SYMPTOMS OF FAILURE

Fault codes P0105 P0107 P0108 P0234 on VAG-COM/VCDS
Limp mode on Golf Mk4 1.8T during acceleration from low speed
Boost limited to base wastegate on Golf Mk5 TDI at highway speed
Hesitation at part-throttle on Jetta 1.4 TSI in stop-start traffic
Increased black smoke on Caddy/Caravelle TDI under load
Fuel consumption increase of 1.5-2 L/100km across the range

[01/05 - 08/10] VOLKSWAGEN CADDY 2CA/ 2CH/ 2KA/ 2KH III TDI 1.9L 4cyl BLS/ BJB 77kW
[09/10 - 05/15] VOLKSWAGEN CADDY 2CA/ 2CH/ 2KA/ 2KH III TSI 1.2L 4cyl CBZA 63kW
[09/10 - 05/15] VOLKSWAGEN CADDY 2CA/ 2CH/ 2KA/ 2KH III TSI 1.2L 4cyl CBZB 77kW
[04/04 - 08/10] VOLKSWAGEN CADDY 2CB/ 2CJ/ 2KB/ 2KJ III TDI 1.9L 4cyl BLS/ BJB 77kW
[08/04 - 11/08] VOLKSWAGEN GOLF 1K1 V TDI 1.9L 4cyl BLS/ BKC/ BXE 77kW
[11/08 - 11/12] VOLKSWAGEN GOLF 5K1 VI TSI 1.2L 4cyl CBZB 77kW
[10/08 - 11/12] VOLKSWAGEN GOLF 5K1 VI TSI 1.4L 4cyl CAXA Euro 5 90kW
[07/09 - 07/13] VOLKSWAGEN GOLF AJ5 VI TSI 1.4L 4cyl CAXA Euro 5 90kW
[04/10 - 07/15] VOLKSWAGEN JETTA 162/ 163/ AV2/ AV3 IV TDI 1.6L 4cyl CAYC 77kW
[06/09 - 10/10] VOLKSWAGEN JETTA 1K2 III TDI 1.6L 4cyl CAYC 77kW
[08/05 - 10/10] VOLKSWAGEN JETTA 1K2 III TDI 1.9L 4cyl BLS/ BKC/ BXE 77kW
[05/99 - 07/06] VOLKSWAGEN LT 28-46 2DA/ 2DD/ 2DH II TDI 2.5L 5cyl ANJ/ AVR 80kW
[05/99 - 07/06] VOLKSWAGEN LT 28-46 2DC/ 2DF/ 2DG/ 2DL/ 2DM II TDI 2.5L 5cyl ANJ/ AVR 80kW
[06/09 - 04/14] VOLKSWAGEN POLO 601/ 603/ 6C1/ 6R1 V TDI 1.6L 4cyl CAYB 66kW
[11/09 - 04/14] VOLKSWAGEN POLO 601/ 603/ 6C1/ 6R1 V TSI 1.2L 4cyl CBZB 77kW
[09/05 - 11/09] VOLKSWAGEN POLO 9A_/ 9N_ IV GTI 1.8L 4cyl BJX 110kW
[09/95 - 04/03] VOLKSWAGEN TRANSPORTER / KOMBI 70A/ 70H/ 7DA/ 7DH T4 TDI 2.5L 5cyl AYC/ ACV/ AUF 75kW
[11/03 - 08/15] VOLKSWAGEN TRANSPORTER / KOMBI 7EA/ 7EH/ 7HA/ 7HH T5 2.0L 4cyl AXA 85kW
[04/03 - 11/09] VOLKSWAGEN TRANSPORTER / KOMBI 7EA/ 7EH/ 7HA/ 7HH T5 TDI 1.9L 4cyl AXB 77kW
[04/03 - 11/09] VOLKSWAGEN TRANSPORTER / KOMBI 7EA/ 7EH/ 7HA/ 7HH T5 TDI 1.9L 4cyl AXC 63kW
[01/06 - 11/09] VOLKSWAGEN TRANSPORTER / KOMBI 7EA/ 7EH/ 7HA/ 7HH T5 TDI 1.9L 4cyl BRR 62kW
[01/06 - 11/09] VOLKSWAGEN TRANSPORTER / KOMBI 7EA/ 7EH/ 7HA/ 7HH T5 TDI 1.9L 4cyl BRS 75kW
[10/99 - 04/03] VOLKSWAGEN TRANSPORTER 70E/ 70L/ 70M/ 7DE/ 7DL/ ... T4 TDI 2.5L 5cyl AYC/ ACV/ AUF 75kW
[11/03 - 05/13] VOLKSWAGEN TRANSPORTER 7FD/ 7FE/ 7FL/ 7FY/ 7FZ/ ... T5 2.0L 4cyl AXA 85kW
[04/03 - 11/09] VOLKSWAGEN TRANSPORTER 7FD/ 7FE/ 7FL/ 7FY/ 7FZ/ ... T5 TDI 1.9L 4cyl AXB 77kW
[01/06 - 11/09] VOLKSWAGEN TRANSPORTER 7FD/ 7FE/ 7FL/ 7FY/ 7FZ/ ... T5 TDI 1.9L 4cyl BRS 75kW
[10/99 - 04/03] VOLKSWAGEN CARAVELLE/ TRANSPORTER 70B/ 70C/ 70J/ 70K/ 7DB/ ... T4 TDI 2.5L 5cyl AYC/ ACV/ AUF 75kW

What fault codes does a faulty MAP sensor trigger?

A faulty MAP sensor typically triggers codes P0105 to P0109. P0105 indicates a circuit malfunction, P0106 indicates the signal is out of range, P0107 and P0108 indicate the signal is too low or too high respectively, and P0109 indicates an intermittent circuit fault. These codes combined with symptoms such as poor idle and black smoke are strong indicators of MAP sensor failure.

How do I test a MAP sensor?

With an OBD2 scanner in live data mode, the MAP sensor should read close to atmospheric pressure (around 101 kPa) with the engine off, and drop to 30 to 50 kPa at idle with the engine running due to manifold vacuum. Under wide open throttle the reading should rise back toward atmospheric. A sensor that reads flat or does not respond to throttle changes has failed. You can also test supply voltage and signal output with a multimeter.

Can I drive with a faulty MAP sensor?

You can drive short distances but engine performance will be noticeably degraded. The ECU uses the MAP sensor to calculate fuel delivery - a faulty sensor causes incorrect fuelling which leads to poor economy, rough running, and increased emissions. On turbocharged engines a faulty MAP sensor can also prevent boost control from operating correctly. Replace it as soon as possible to avoid further damage.

What does a MAP sensor do?

The Manifold Absolute Pressure (MAP) sensor measures intake manifold pressure to help the ECU calculate the correct fuel and ignition timing. It is critical for engine efficiency, particularly on turbocharged and supercharged vehicles.

What are the symptoms of a faulty MAP sensor?

Symptoms include poor acceleration, rough idle, excessive fuel consumption, black smoke, engine hesitation, and a Check Engine light with codes P0105-P0109. Turbocharged vehicles may also experience boost control issues.

What is the difference between a MAP sensor and a MAF sensor?

A MAF (Mass Air Flow) sensor directly measures the mass of air entering the engine. A MAP sensor measures manifold pressure and the ECU calculates air mass from that reading. Many vehicles use one or the other; some use both. They are not interchangeable.

Identification
SKU	CMS248-Volkswagen
Brand	Aftermarket OEM Replacement
Part Numbers
Part Number	CMS248
Reference OEM Number	038906051B
Other OEM Numbers	038906051B, 03G906051D, 038906051D, PF100636PB
Related Part Numbers	MP196, MAP1149, PS10118, 0281002400, DS-LDF6-T
Trade Part Numbers	NTY: ECM-AU-000, VEMO: V10-72-1039
Product Specifics
Product Type	SENSOR
Sensor Type	Manifold Absolute Pressure (MAP) Sensor
Fitting Position	Intake Manifold
Number of pins	4-Pin
Fitment Type	Direct Replacement
Other Details
Note	Always verify fitment using your vehicle's OEM part number.