Engine - MIL ON/DTC's P2293/P0087 Stored In ECM

01 MIL on (DTC P2293, P0087 in ECM)

15 11 22

2013147/11

5/31/2011.

Supersedes Technical Service Bulletin Group 15 number 11 - 20 dated April 6, 2011 for reasons listed below.





Affected Vehicles





Condition
MIL on. The following DTC is stored in the ECM data memory:

^ P2293 (Fuel pressure regulator 2 performance)

at times in combination with:

^ P0087 (Rail fuel pressure too low)

^ P1093 (Fuel trim 2, bank 1 malfunction)

Technical Background

Excessive wear of the cam lobe (in the intake camshaft) that drives the high pressure fuel pump. This limits the maximum pump piston lift, causing fuel rail pressure fluctuations. The wear on the cam lobe also leads to wear in the base of the high pressure fuel pump cam follower.

Production Solution

Increased surface hardening of the camshaft lobe for the high pressure fuel pump. Improved intake camshafts have part number 06F 109 101 B.

Service

1. Remove the high pressure fuel pump and visually inspect:





^ The base surface of the cam follower (Figure 1, Point 6) in contact with the camshaft lobe.

^ The tip of the high pressure fuel pump plunger.

^ The high pressure fuel pump camshaft lobe.





2. If the base of the cam follower looks like Figure 2, C or Figure 2, D, no excessive wear is present. The cam follower and camshaft should not be replaced.





3. If the cam follower base surface is excessively worn so that its surface is concave (Figure 2, B) or altogether missing (Figure 2, A), or if the high pressure fuel pump camshaft lobe shows excessive wear (Figure 3), replace the intake camshaft and the cam follower.





4. The high pressure fuel pump must be replaced only if the tip of the plunger shows excessive wear (Figure 4). This condition is only possible if the cam follower base is holed and the plunger tip has come in direct contact with the camshaft lobe.

5. If the intake camshaft is replaced because of excessive wear, also replace the engine oil and the oil filter.

Warranty

When procedure applies to vehicles under warranty, use the following:

Note:
Only one of the following scenarios will apply, see table below:

1. DTC's P2293, P0087 not present within 10/120 extension (outside of NVLW)

2. DTC's P2293, P0087 present, Repair as Technical Bulletin








Required Parts and Tools

Please refer to ETKA for required parts and tools for each model.

Additional Information

All parts and service references provided in this TSB are subject to change and/or removal. Always check with your Parts Department and service manuals for the latest information.