1, 2 and 3 Digit Codes: 133

Scan Tool 133 (MIL 11):

Trouble Code Number
- Scan tool 133
- General scan tool P1390
- MIL 11

Fault Message
- Timing belt skipped 1 tooth or more

Background
- The PCM uses voltage signals generated by the camshaft position sensor and crankshaft position sensors to determine engine synchronization.
- If these signals become out of sync, this DTC is produced.

Range of Check
- With the engine running, every 44 ms an inhibit condition is looked for as follows: wide-open throttle, large change in MAP, cold engine, insufficient start to run time, r/min outside given windows
- If an inhibit condition does not exist, the misalignment between the camshaft and crankshaft is monitored.

Set Condition
- Throttle position sensor output voltage is 3.75-4.71 V

Range of Check
- Engine speed: more than 1, 500 r/min
- Vehicle speed: more than 25 mph (40 km/h)
- Subtract MAP value from atmospheric pressure: less than 13 kPa (19 psi)

Set Condition
- When the camshaft position sensor is offset from the crankshaft position sensor one tooth or more.

Probable Cause
- Timing belt improperly installed
- Crankshaft position sensor improperly installed
- Camshaft position sensor improperly installed.
- Camshaft position sensor connector improperly connected
- Crankshaft position sensor connector improperly connected
Camshaft's relative position not relearned after one of the following have been serviced: camshaft, camshaft sprocket, timing belt, tensioner, cylinder head, head gasket, crankshaft sprocket, crankshaft, cylinder block or the PCM

CAUTION: When the following parts are replaced with new ones, be sure to use the scan tool to synchronize the camshaft position sensor with the crankshaft position sensor again or disconnect the negative battery cable for 10 seconds or more: camshaft, camshaft sprocket, timing belt, tensioner, cylinder head, head gasket, crankshaft sprocket, crankshaft, cylinder block, etc.