BRAND NEW *OEM Quality* 2.5 Bar boost pressure sensor to suit Audi A1 A3 A6 with 1.2L 1.4L and 3.0L TFSI TDI engines.

The Audi A1 and A3 with 1.2 TSI and 1.4 TFSI are sensitive applications for MAP sensor drift - small-displacement high-pressure turbos can mask the failure for longer before limp mode kicks in. This replacement is matched to OEM 038906051B. Dispatched same-day from Melbourne.

TO SUIT

Suits Audi A1 8X with 1.2 TSI (CBZB) and 1.4 TFSI (CAVD CAVE) where the compact engine bay generates more thermal stress on the sensor than larger Audi models. Also suits A3 8P and 8V with 1.4 TFSI (CAVD CXSA) and A6 C7 with 3.0 TDI (CGQB CKVB) - the 3.0 TDI produces more dramatic limp mode symptoms when this sensor fails and is often confused with a turbo actuator fault initially. Verify 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 Audi A1 1.2 TSI the MAP sensor sits on the intake manifold downstream of the K03-style turbo in a very compact engine bay. The constrained space means ambient temperatures around the sensor are higher than in larger Audi models - this accelerates diaphragm fatigue and is a common reason A1 owners replace this sensor earlier than A3 owners with the same mileage.

On the A6 C7 3.0 TDI the same sensor operates in a much larger engine bay at higher boost levels. Failure on the 3.0 TDI is typically more sudden and dramatic - confirmed limp mode with P0108 at highway speed rather than the subtle hesitation seen on the A1 1.2 TSI.

COMMON SYMPTOMS OF FAILURE

Fault codes P0105 P0107 P0108 P0234
Hesitation at low RPM on A1 1.2 TSI before full limp mode
Full limp mode on A3 1.4 TFSI during spirited acceleration
Boost limited to base wastegate pressure on 3.0 TDI
Increased fuel consumption on A6 C7
Rough cold idle on A1 in winter

[05/10 - 04/15] AUDI A1 8X1/ 8XK TFSI 1.2L 4cyl CBZA 63kW
[01/11 - 04/15] AUDI A1 8X1/ 8XK TFSI 1.4L 4cyl CAVG/ CTHG 136kW
[10/12 - 04/15] AUDI A1 8X1/ 8XK TFSI 1.4L 4cyl CAXA/ CNVA Euro 5 90kW
[01/12 - 04/15] AUDI A1 8XA/ 8XF TFSI 1.2L 4cyl CBZA 63kW
[11/11 - 04/15] AUDI A1 8XA/ 8XF TFSI 1.4L 4cyl CAVG/ CTHG 136kW
[10/12 - 04/15] AUDI A1 8XA/ 8XF TFSI 1.4L 4cyl CAXA/ CNVA Euro 5 90kW
[09/07 - 08/12] AUDI A3 8P1 TFSI 1.4L 4cyl CMSA/ CAXC 92kW
[09/07 - 03/13] AUDI A3 8PA TFSI 1.4L 4cyl CMSA/ CAXC 92kW
[09/08 - 08/10] AUDI A6 4F2 C6 RS6 5.0L V10 BUH 426kW
[06/06 - 10/08] AUDI A6 4F2 C6 TDI 3.0L V6 ASB 171kW
[11/04 - 05/06] AUDI A6 4F2 C6 TDI 3.0L V6 BMK 165kW
[04/08 - 08/10] AUDI A6 4F5 C6 RS6 5.0L V10 BUH 426kW
[03/05 - 05/06] AUDI A6 4F5 C6 TDI 3.0L V6 BMK 165kW
[05/06 - 10/08] AUDI A6 Allroad 4FH C6 TDI 3.0L V6 ASB 171kW

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-Audi
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.