(Revision 6) April 2023
Dealer Service Instructions for:

Emissions Recall U90
Catalyst Efficiency
NOTE: 2015 model year KL, PF, UF, BU, and VM have been added to campaign.

Remedy Available
2015-2016 (KL) Jeep® Cherokee
2015-2016 (PF) Dodge Dart
2015-2016 (UF) Chrysler 200
2015-2016 (BU) Jeep® Renegade
2016 (FB) Fiat 500X
2015-2016 (VM) Ram ProMaster City
NOTE: This recall applies only to the above vehicles equipped with a 2.4L Engine
(Sales Codes ED6, ED8 or EDD).
NOTE: Some vehicles above may have been identified as not involved in this
recall and therefore have been excluded from this recall.
IMPORTANT: Some of the involved vehicles may be in Dealer vehicle
inventory. Dealers should complete this recall service on these vehicles before
retail delivery. Involved vehicles can be determined by using the VIP inquiry
process.

© Copyright 2023, FCA US LLC, All Rights Reserved

(tdb)

Emissions Recall U90 – Catalyst Efficiency

Page 2

Subject
About 368,504 of the above vehicles may exceed tailpipe emission standards due to
a loss of catalyst CO/NOx conversion efficiency resulting from the catalyst
operating at high temperatures.

Repair
Install a new catalyst and reprogram the Powertrain Control Module (PCM) and
Transmission Control Module (TCM) with the latest software.

Parts Information
NOTE: ALL vehicles require campaign kit CEZGU901AA.
Part Number
Description
CEZGU901AA
Campaign Kit
Each package contains the following components:
Quantity
Description
6
Bolt, Manifold to Engine Cylinder Head M10x1.25x30.00
2
Nut, Manifold to Engine Cylinder Head M10x1.25
2
Nut, Maniverter to Exhaust Pipe Flange M8x1.25
1
O2 Sensor – Mid-bed / Downstream
1
Gasket, Maniverter Outlet
3
Nut, Maniverter Upper Heat Shield
2
Bolt, Maniverter Upper Heat Shield
1
Bolt, Maniverter Bracket to Engine M8x1.25x25.00

Emissions Recall U90 – Catalyst Efficiency

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Parts Information [Continued]
NOTE: ONLY ONE Upstream O2 Sensor below will be required depending on
vehicle application.
Part Number

Description

CEZGU906AA

Upstream O2 Sensor (Except PF)

•
•
•
•
•

(UF) Chrysler 200
(KL) Jeep Cherokee
(VM) Ram ProMaster City
(FB) Fiat 500X
(BU) Jeep Renegade

Part Number

Description

CEZGU907AA

Upstream O2 Sensor (PF Only)

•

(PF) Dodge Dart

Emissions Recall U90 – Catalyst Efficiency

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Parts Information [Continued]
NOTE: ONLY ONE Gasket and Heat Shield Campaign Kit below will be
required depending on vehicle model.

Part Number
Description
CEZGU905AA
Campaign Kit (Gasket and Heat Shield)
• (UF) Chrysler 200
• (KL) Jeep Cherokee
• (PF) Dodge Dart
Each package contains the following components:
Quantity
Description
1
Upper Heat Shield
1
Gasket, Exhaust Manifold

Part Number
CEZGU908AA

Description
Campaign Kit (Gasket and Heat Shield)

(VM) Ram ProMaster City
• (FB) Fiat 500X
• (BU) Jeep Renegade
Each package contains the following components:
Quantity
Description
1
Upper Heat Shield
1
Gasket, Exhaust Manifold
•

Emissions Recall U90 – Catalyst Efficiency

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Parts Information [Continued]
NOTE: ONLY ONE Maniverter Campaign Kit below will be required. Either
FED or PZEV depending on vehicle emissions.
Part Number
Description
CEZGU902AB
Campaign Kit (Maniverter)
Equipped with: Federal (FED) emissions
• (UF) Chrysler 200
• (KL) Jeep Cherokee
• (PF) Dodge Dart
• (VM) Ram ProMaster City
• (FB) Fiat 500X
• (BU) Jeep Renegade
Each package contains the following components:
Quantity Description
1
Maniverter
2
Bolts, Maniverter to Outlet Bracket M8X1.25X25.00
1
Bracket, Maniverter to Outlet
Part Number
Description
CEZGU903AB
Campaign Kit (Maniverter)
Equipped with: Partial Zero-Emissions Vehicle (PZEV)
• (UF) Chrysler 200
• (KL) Jeep Cherokee
• (PF) Dodge Dart
Each package contains the following components:
Quantity Description
1
Maniverter
2
Bolts, Maniverter to Outlet Bracket M8X1.25X25.00
1
Bracket, Maniverter to Outlet

Emissions Recall U90 – Catalyst Efficiency

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Parts Information [Continued]
NOTE: No additional parts are anticipated for this campaign. If any additional
parts are determined to be required due to collateral damage or consequential
repairs caused by maniverter stripped holes or broken bolts in the cylinder
head, the dealer must first check if a related LOP has been created for repairs
prior to performing the repair. If no related LOP is found, the LOP review
process must be followed to request a related Recall LOP be added as follows:
Submit a LOP Related Inquiry (located in DealerCONNECT > Service > Claim
Administration) for evaluation and update.
➢ IF the request is approved – the related Recall LOP will be added to the
Labor Operations and you are to proceed with normal Recall claim entry
process.
➢ IF the request is not approved – submit the repair under Warranty (W) if
the repair has been pre-authorized by your Area Manager or Business
Center representative.

Parts Return
Return the maniverter catalyst to the Mopar Core Return Center for core credit.

Special Tools
The following special tools are required to perform this repair:
➢ NPN

wiTECH MicroPod II

➢ NPN

Laptop Computer

➢ NPN

wiTECH Software

Emissions Recall U90 – Catalyst Efficiency

Page 7

Service Procedure
A. Replace Maniverter (Manifold / Catalytic Converter)
1. Position the vehicle on a lift.

2. Raise and support the vehicle.

3. If equipped, remove and SAVE the fasteners securing the engine belly pan
(Figure 1).

4. If equipped, remove and SAVE the engine belly pan (Figure 1).

BELLY PAN

Figure 1 – Engine Belly Pan

Emissions Recall U90 – Catalyst Efficiency

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Service Procedure [Continued]
WARNING: The maniverter
and exhaust pipes become very
hot during engine operation.
Allow engine to cool before
removing
exhaust
system
components. Failure to allow
engine to cool before removal
may result in personal injury
caused by burns.

5. Remove and SAVE the bolt
securing the exhaust crossunder
pipe support bracket to the
transmission (Figure 2).

NUTS

EXHAUST
FLANGE

CROSSUNDER
PIPE

SUPPORT
BRACKET BOLT

Figure 2 – Crossunder Pipe

6. Remove the and DISCARD the
two nuts securing the exhaust
flange crossunder pipe to the
maniverter (Figure 2).

7. Disconnect
the
exhaust
crossunder pipe from the
maniverter and support the
exhaust crossunder pipe to
prevent damage to the flex joint
(Figure 3).

CROSSUNDER
PIPE

SUPPORT

Figure 3 – Support Crossunder Pipe

Emissions Recall U90 – Catalyst Efficiency

Page 9

Service Procedure [Continued]
8. Remove the and SAVE the bolt
securing the maniverter lower
support bracket to the engine oil
pan (Figure 4).

BOLTS

SUPPORT
BRACKET

9. Remove the and DISCARD the
two bolts securing the maniverter
lower support bracket to the
maniverter and DISCARD the
support bracket (Figure 4).

10. Lower the vehicle.

Figure 4 – Maniverter Support Bracket

11. (KL) Jeep Cherokee Only: Remove push pin fasteners then remove closeout
panel (Figure 5).
CLOSEOUT PANEL

PUSH PINS

Figure 5 – Closeout Panel
(KL) Jeep Cherokee

Emissions Recall U90 – Catalyst Efficiency

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Service Procedure [Continued]
12. (KL) Jeep Cherokee Only:
Remove one bolt and release air
duct resonator assembly from the
two push pin grommets, then
remove the air duct resonator
assembly from the vehicle
(Figure 6).
NOTE: Air duct resonator
assembly is slotted to slide onto
the push pin grommets. It is
not necessary to remove the
push pin grommets.

AIR DUCT RESONATOR

BOLT

PUSH PIN GROMMETS

Figure 6 – Air Duct Resonator
(KL) Jeep Cherokee

13. Release the engine cover from the ball studs if applicable or remove and SAVE
the four fasteners if applicable, then remove and SAVE the engine cover
(Figure 7).

ENGINE COVER

ENGINE COVER

FASTENERS

Figure 7 – Engine Cover
14. Disconnect and isolate the negative battery cable. If equipped with an Intelligent
Battery Sensor (IBS), disconnect the IBS connector first before disconnecting the
negative battery cable.

Emissions Recall U90 – Catalyst Efficiency

Page 11

Service Procedure [Continued]
15. (VM) Ram ProMaster City
Only: Remove the bolt (1)
securing the top of the accessory
drive belt guard (2) (Figure 8).

Figure 8 – Belt Guard

16. (VM) Ram ProMaster City
Only: Remove three nuts (2) and
reposition the belt cover (1)
(Figure 9).

Figure 9 – Belt Guard

Emissions Recall U90 – Catalyst Efficiency

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Service Procedure [Continued]
CAUTION: Do not let the tensioner arm snapback to the fully extended
position, severe damage may occur to the tensioner.

17. (VM) Ram ProMaster City Only: Decrease the belt tension by rotating the
center bolt of the tensioner pulley (1) counterclockwise, lift the belt (2) off one of
the pulleys and reposition the accessory drive belt then slowly release the
tensioner to the fully extended position (Figure 10).

Figure 10 – Accessory Belt

Emissions Recall U90 – Catalyst Efficiency

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Service Procedure [Continued]
18. (VM) Ram ProMaster City
Only: Remove the three bolts (2)
and the power steering pump
pulley (1) (Figure 11).

Figure 11 – Pump Pully

19. (VM) Ram ProMaster City
Only: Remove the nut (3) from
the power steering pump support
bracket (4) (Figure 12).

20. (VM) Ram ProMaster City
Only: Remove the three bolts (6)
and reposition the power steering
pump (5) (Figure 12).