Codes 211, 212 and 452, can one of these codes cause other two codes

Good afternoon,

211 and 212 are related. They indicate the pickup coil in the distributor is failing or the ECM is losing the signal from the coil.

The 452 indicates no signal from the vehicle speed sensor to the ECM.

I attached a picture of the VSS for you. Depending on the transmission, it is either at the back of the tail shaft on the transmission or it is the speed sensor on top of the differential.

Roy

DTC 211
Profile ignition pickup circuit failure.

KOEO Memory Code. Go to NA1
See: Computers and Control Systems > Pinpoint Tests > NA1 - Erratic Ignition

DTC 212
Loss of ignition diagnostic monitor input to powertrain control module or spark output circuit grounded.

KOEO Memory Code. Go to NA2
See: Computers and Control Systems > Pinpoint Tests > NA2 - Check IDM Circuit Continuity

452

DTC 452
Insufficient input from vehicle speed sensor to powertrain control module.

KOEO Memory Code. Go to DS1
See: Computers and Control Systems > Pinpoint Tests > DS1 - Check PSOM Resistance

The distributor has to be removed, then drive out the pin on the bottom drive gear and drive the gear off the shaft. Then you can remove the shaft and the coil can be removed.

Roy

REMOVAL

CAUTION: Do not attempt to replace stator without an arbor press.

1. Remove distributor assembly.

CAUTION: The drive gear on distributors is not released for service. If any nicks or cracks occur during the disassembly or reassembly procedures, a new distributor must be used. The distributor drive gear is matched to the distributor at assembly and should never be replaced. Although some of the drive gears for other distributors may physically fit the distributor, they must not be used. Whenever damage or excessive wear is noted on the drive gear, it must be replaced with a new distributor.

2. Remove two armature retaining screws.

NOTE: Hold drive gear to loosen the armature screws, do not hold the distributor armature.

3. Remove armature.
4. Mark the collar and distributor gear with a felt tip pen for reference when reinstalling the distributor gear.
5. Remove and discard the roll pin from both the gear and collar.

Removal Of Distributor Gear
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6. Invert the distributor and place in the Axle Bearing/Seal Plate T75L-1165-B. Press off the gear Bearing Pulling Attachment D79L-4621-A or equivalent.
7. Deburr and polish the shaft with emery cloth so the shaft assembly will slide out freely from the distributor base.
8. Remove the shaft assembly.
9. Remove the distributor stator assembly screw and retainer.
10. Remove the octane rod screw, octane rod, and retainer.

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11. Remove the distributor stator from the top of the bowl.

You are welcome.

Always glad to help.

Roy